how to removechild element from list in JavaScript

when I add a element from right to left I can see element in both view by name and view by code

when I perform delete how to remove value from both the list and disable false for both lists

<form name="adminForm" id="formAdmin" method="post" action="http://localhost:7003/ccrSrc/initAdmin.do">
<table style="margin-top: -15px" cellspacing="0" cellpadding="0" border="0" width="760">
   <tbody>
      <tr bgcolor="#EEEEEE">
         <td width="800" valign="top" style="margin:0px; padding: 0px;">
            <table class="orgtable">
               <tbody>
                  <tr>
                     <td class="tabletitle2" width="40%" nowrap="">Available Orgs:</td>
                     <td class="tabletitle2" width="20%">&nbsp;</td>
                     <td class="tabletitle2" width="40%" nowrap="">Assigned Orgs:</td>
                  </tr>
                  <tr>
                     <!--Available Organizations-->
                     <td width="40%" class="bodytext6">
                        <div class="container">
                           <label class="section-label">Status:</label>
                           <input class="radioBtn" type="radio" name="status" value="ACTIVE" checked="" onclick="javascript:changeStatus(1);">
                           <label class="section-label">Active</label>
                           <input class="radioBtn" type="radio" name="status" value="INACTIVE" onclick="javascript:changeStatus(2);">
                           <label class="section-label">Inactive</label>
                           <br/>
                           <label class="section-label">View:</label>
                           <input class="radioBtn" type="radio" name="viewGrp" value="BYNAME" checked="" onclick="javascript:changeView('BYNAME');">
                           <label class="section-label">    Org Name</label>
                           <input class="radioBtn" type="radio" name="viewGrp" value="BYCODE" onclick="javascript:changeView('BYCODE');">
                           <label class="section-label">Org Code</label>
                        </div>
                        <div id="Status1" style="cursor:default; display: inline;">
                           <select id="" name="activeChnl" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%">
                              <option value="1">Accountancy, Banking and Finance</option>
                              <option value="2">Animal and Plant Resource</option>
                              <option value="3">Business, Consulting and Management</option>
                              <option value="4">Charity and Voluntary Work</option>
                              <option value="5">Creative Arts and Design</option>
                              <option value="6">Energy and Utilities</option>
                              <option value="7">Engineering and Manufacturing</option>
                              <option value="8">Enviromemt amd Agriculture</option>
                              <option value="9">Healthcare</option>
                              <option value="10">Hospitality and Events Management</option>
                           </select>
                        </div>
                        <div id="Status2" style="cursor:default; display: none;">
                           <select name="inactiveChnl" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%">
                              <option value="11">Information, Research and Analysis</option>
                              <option value="12">Insurance and Pensions</option>
                              <option value="13">Law</option>
                              <option value="14">Law Enforcement and Security</option>
                              <option value="15">Leisure, Sport and Tourism</option>
                              <option value="16">Marketing, Advertising and PR</option>
                              <option value="17">Media and Internet</option>
                              <option value="18">Performing Arts</option>
                              <option value="19">Property and Construction</option>
                              <option value="20">Public Services and Administration</option>
                           </select>
                        </div>
                        <div id="Status3" style="cursor:default; display: none;">
                           <select name="activeChnlByCode" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%">
                              <option value="1">001 Accountancy, Banking and Finance</option>
                              <option value="2">002 Animal and Plant Resource</option>
                              <option value="3">003 Business, Consulting and Management</option>
                              <option value="4">004 Charity and Voluntary Work</option>
                              <option value="5">005 Creative Arts and Design</option>
                              <option value="6">006 Energy and Utilities</option>
                              <option value="7">007 Engineering and Manufacturing</option>
                              <option value="8">008 Enviromemt amd Agriculture</option>
                              <option value="9">009 Healthcare</option>
                              <option value="10">010 Hospitality and Events Management</option>
                           </select>
                        </div>
                        <div id="Status4" style="cursor:default; display: none;">
                           <select name="inactiveChnlByCode" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%">
                              <option value="11">011 Information, Research and Analysis</option>
                              <option value="12">012 Insurance and Pensions</option>
                              <option value="13">013 Law</option>
                              <option value="14">014 Law Enforcement and Security</option>
                              <option value="15">015 Leisure, Sport and Tourism</option>
                              <option value="16">016 Marketing, Advertising and PR</option>
                              <option value="17">017 Media and Internet</option>
                              <option value="18">018 Performing Arts</option>
                              <option value="19">019 Property and Construction</option>
                              <option value="20">020 Public Services and Administration</option>
                           </select>
                        </div>
                     </td>
                     <td width="4%" align="center" nowrap="">
                        <button class="addRemoveBtn" name="btnAdd" type="button">&gt;&gt;</button>
                        <br><br><br>
                        <button class="addRemoveBtn" name="btnRemove" type="button">&lt;&lt;</button>
                     </td>
                     <td width="48%" class="smalltext0">
                        <div id="activeStatus1" style="cursor: default; display: inline;">
                           <select name="assignedActiveChnl" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%;height:347px;">
                           </select>
                        </div>
                        <div id="activeStatus2" style="cursor: default; display: none;">
                           <select name="assignedInactiveChnl" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%;height:347px;">
                           </select>
                        </div>
                        <div id="activeStatus3" style="cursor:default; display: none;">
                           <select name="assignedActiveChnlByCode" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%;height:347px;">
                           </select>
                        </div>
                        <div id="activeStatus4" style="cursor:default; display: none;">
                           <select name="assignedInactiveChnlByCode" multiple="multiple" size="25%" style="overflow-x:scroll;width:100%;height:347px;">
                           </select>
                        </div>
                     </td>
                  </tr>
                  <tr>
                     <td></td>
                     <td>
                     </td>
                     <td align="right">
                        <button id="cancel" style="width:75px;" type="button" onclick="javascript:loadUserOrgAction();">Cancel</button>
                        <button id="save" style="width:75px;" type="button" onclick="javascript:loadUserOrgAction();">Save</button>
                     </td>
                  </tr>
               </tbody>
            </table>
         </td>
      </tr>
   </tbody>
</table>
</form> 

below is the JavaScript function for add and remove
when add click is performed i can add value to both assigned list as code and name same behaviour should be work for when i click on remove how can i achieve these ?

var tempAddedActiveOrgs = [];
var tempAddedInactiveOrgs = [];
var tempAddedActiveOrgsByCode = [];
var tempAddedInactiveOrgsByCode = [];

let View1 = true;
let View2 = false;
let Status1 = true;
let Status2 = false;
let ActiveStatus1 = true;
let ActiveStatus2 = false;

function changeStatus(statusId) {
    var frm = document.getElementById('formAdmin');
    var activChnls = frm.activeChnl;
    var inactivChnls = frm.inactiveChnl;
    var sectionName = "Status" + statusId;
    //reset sections
    view1 = false;
    document.getElementById("Status1").style.display = 'none';
    view2 = false;
    document.getElementById("Status2").style.display = 'none';
    //display appropriate section
    if (sectionName == "Status1") {
        Status1 = true;
        document.getElementById("Status1").style.display = 'inline';
        if (activChnls.length < 1) {
            alert('You currently have no Partners assigned. To update your list of assigned Partners, please visit go/updatemyccr and submit a request form.');
            disableButtons();
        } else if (document.getElementById('formAdmin').viewGrp.value == 'BYNAME') {
            document.getElementById("Status1").style.display = 'inline';
            document.getElementById("Status2").style.display = 'none';
            document.getElementById("Status3").style.display = 'none';
            document.getElementById("Status4").style.display = 'none';
            document.getElementById("activeStatus1").style.display = 'inline';
            document.getElementById("activeStatus2").style.display = 'none';
            document.getElementById("activeStatus3").style.display = 'none';
            document.getElementById("activeStatus4").style.display = 'none';
        } else if (document.getElementById('formAdmin').viewGrp.value == 'BYCODE') {
            document.getElementById("Status1").style.display = 'none';
            document.getElementById("Status2").style.display = 'none';
            document.getElementById("Status3").style.display = 'inline';
            document.getElementById("Status4").style.display = 'none';
            document.getElementById("activeStatus1").style.display = 'none';
            document.getElementById("activeStatus2").style.display = 'none';
            document.getElementById("activeStatus3").style.display = 'inline';
            document.getElementById("activeStatus4").style.display = 'none';
        } else {
            enableButtons();
            activChnls.selectedIndex = "0";
            activChnls.focus();
            clearSearch();
        }
    } else if (sectionName == "Status2") {
        Status2 = true;
        document.getElementById("Status2").style.display = 'inline';
        if (inactivChnls.length < 1) {
            disableButtons();
        } else if (document.getElementById('formAdmin').viewGrp.value == 'BYNAME') {
            document.getElementById("Status1").style.display = 'none';
            document.getElementById("Status2").style.display = 'inline';
            document.getElementById("Status3").style.display = 'none';
            document.getElementById("Status4").style.display = 'none';
            document.getElementById("activeStatus1").style.display = 'none';
            document.getElementById("activeStatus2").style.display = 'inline';
            document.getElementById("activeStatus3").style.display = 'none';
            document.getElementById("activeStatus4").style.display = 'none';
        } else if (document.getElementById('formAdmin').viewGrp.value == 'BYCODE') {
            document.getElementById("Status1").style.display = 'none';
            document.getElementById("Status2").style.display = 'none';
            document.getElementById("Status3").style.display = 'none';
            document.getElementById("Status4").style.display = 'inline';
            document.getElementById("activeStatus1").style.display = 'none';
            document.getElementById("activeStatus2").style.display = 'none';
            document.getElementById("activeStatus3").style.display = 'none';
            document.getElementById("activeStatus4").style.display = 'inline';
        } else {
            enableButtons();
            inactivChnls.selectedIndex = "0";
            inactivChnls.focus();
            clearSearch();
        }
    } else {

        Status1 = true;
        document.getElementById("Status1").style.display = 'inline';
        statusId = "1";
    }
}

function changeView(type) {
    if (type == "BYNAME" && document.getElementById('formAdmin').status.value == 'ACTIVE') {
        document.getElementById("Status1").style.display = 'inline';
        document.getElementById("Status2").style.display = 'none';
        document.getElementById("Status3").style.display = 'none';
        document.getElementById("Status4").style.display = 'none';
        document.getElementById("activeStatus1").style.display = 'inline';
        document.getElementById("activeStatus2").style.display = 'none';
        document.getElementById("activeStatus3").style.display = 'none';
        document.getElementById("activeStatus4").style.display = 'none';
    } else if (type == "BYNAME" && document.getElementById('formAdmin').status.value == 'INACTIVE') {
        document.getElementById("Status1").style.display = 'none';
        document.getElementById("Status2").style.display = 'inline';
        document.getElementById("Status3").style.display = 'none';
        document.getElementById("Status4").style.display = 'none';
        document.getElementById("activeStatus1").style.display = 'none';
        document.getElementById("activeStatus2").style.display = 'inline';
        document.getElementById("activeStatus3").style.display = 'none';
        document.getElementById("activeStatus4").style.display = 'none';

    } else if (type == "BYCODE" && document.getElementById('formAdmin').status.value == 'ACTIVE') {
        document.getElementById("Status1").style.display = 'none';
        document.getElementById("Status2").style.display = 'none';
        document.getElementById("Status3").style.display = 'inline';
        document.getElementById("Status4").style.display = 'none';
        document.getElementById("activeStatus1").style.display = 'none';
        document.getElementById("activeStatus2").style.display = 'none';
        document.getElementById("activeStatus3").style.display = 'inline';
        document.getElementById("activeStatus4").style.display = 'none';

    } else if (type == "BYCODE" && document.getElementById('formAdmin').status.value == 'INACTIVE') {
        document.getElementById("Status1").style.display = 'none';
        document.getElementById("Status2").style.display = 'none';
        document.getElementById("Status3").style.display = 'none';
        document.getElementById("Status4").style.display = 'inline';
        document.getElementById("activeStatus1").style.display = 'none';
        document.getElementById("activeStatus2").style.display = 'none';
        document.getElementById("activeStatus3").style.display = 'none';
        document.getElementById("activeStatus4").style.display = 'inline';

    }
}

adminForm.btnAdd.onclick = () => {
    if (document.getElementById("Status1").style.display == 'inline') {
        addActiveChnlOrgs();
    } else if (document.getElementById("Status2").style.display == 'inline') {
        addInactiveChnlOrgs();
    }
}

function addActiveChnlOrgs() {
    var frm = document.getElementById('formAdmin');
    var assignedActiveChnls = frm.assignedActiveChnl;
    var activeChnls = frm.activeChnl;
    var activeChnlByCode = frm.activeChnlByCode;
    var assignedActiveChnlByCode = frm.assignedActiveChnlByCode;
    //adding active selected chnl org by name to assigned chnl org by name 
    for (i = 0; i < activeChnls.length; i++) {
        if (activeChnls[i].selected == true) {
            var opt = document.createElement('option');
            opt.value = activeChnls[i].value;
            opt.innerHTML = activeChnls[i].label;
            assignedActiveChnls.appendChild(opt);
            if (tempAddedActiveOrgs.indexOf(opt.value) === -1) {
                tempAddedActiveOrgs.push(opt.value);
            }
            activeChnls[i].disabled = true;
        }
    }

    //adding active selected chnl org by name to assigned chnl org by code 
    for (i = 0; i < activeChnls.length; i++) {
        if (activeChnls[i].selected == true) {
            for (j = 0; j < activeChnlByCode.length; j++) {
                if (activeChnls[i].value == activeChnlByCode[j].value) {
                    var opt = document.createElement('option');
                    opt.value = activeChnlByCode[j].value;
                    opt.innerHTML = activeChnlByCode[j].label;
                    assignedActiveChnlByCode.appendChild(opt);
                    if (tempAddedActiveOrgsByCode.indexOf(opt.value) === -1) {
                        tempAddedActiveOrgsByCode.push(opt.value);
                    }
                    activeChnlByCode[j].disabled = true;
                }
            }
        }
    }
    activeChnls.selectedIndex = -1;
    activeChnlByCode.selectedIndex = -1;

    sortSelect(assignedActiveChnls);
    sortSelect(assignedActiveChnlByCode);
    extractLabelForDisplay(assignedActiveChnls);
    //color added orgs to blue
    for (var i = 0; i < assignedActiveChnls.length; i++) {
        for (var j = 0; j < tempAddedActiveOrgs.length; j++) {
            if (assignedActiveChnls[i].value == tempAddedActiveOrgs[j]) {
                assignedActiveChnls[i].style.color = "blue";
            }
        }
    }

    for (var i = 0; i < assignedActiveChnlByCode.length; i++) {
        for (var j = 0; j < tempAddedActiveOrgsByCode.length; j++) {
            if (assignedActiveChnlByCode[i].value == tempAddedActiveOrgsByCode[j]) {
                assignedActiveChnlByCode[i].style.color = "blue";
            }
        }
    }
}

function addActiveChnlOrgsByCode() {
    var frm = document.getElementById('formAdmin');
    var assignedActiveChnlByCode = frm.assignedActiveChnlByCode;
    var activeChnlByCode = frm.activeChnlByCode;
    var assignedActiveChnls = frm.assignedActiveChnl;
    var activeChnls = frm.activeChnl;
    //adding active selected chnl org by code to assigned chnl org by code 
    for (i = 0; i < activeChnlByCode.length; i++) {
        if (activeChnlByCode[i].selected == true) {
            var opt = document.createElement('option');
            opt.value = activeChnlByCode[i].value;
            opt.innerHTML = activeChnlByCode[i].label;
            assignedActiveChnlByCode.appendChild(opt);
            if (tempAddedActiveOrgsByCode.indexOf(opt.value) === -1) {
                tempAddedActiveOrgsByCode.push(opt.value);
            }
            activeChnlByCode[i].disabled = true;
        }
    }
    //adding active selected chnl org by code to assigned chnl org by name
    for (i = 0; i < activeChnlByCode.length; i++) {
        if (activeChnlByCode[i].selected == true) {
            for (j = 0; j < activeChnls.length; j++) {
                if (activeChnlByCode[i].value == activeChnls[j].value) {
                    var opt = document.createElement('option');
                    opt.value = activeChnls[j].value;
                    opt.innerHTML = activeChnls[j].label;
                    assignedActiveChnls.appendChild(opt);
                    if (tempAddedActiveOrgs.indexOf(opt.value) === -1) {
                        tempAddedActiveOrgs.push(opt.value);
                    }
                    activeChnls[j].disabled = true;
                }
            }
        }
    }
    activeChnlByCode.selectedIndex = -1;
    activeChnls.selectedIndex = -1;

    sortSelect(assignedActiveChnls);
    sortSelect(assignedActiveChnlByCode);
    extractLabelForDisplay(assignedActiveChnls);
    //color added orgs to blue
    for (var i = 0; i < assignedActiveChnlByCode.length; i++) {
        for (var j = 0; j < tempAddedActiveOrgsByCode.length; j++) {
            if (assignedActiveChnlByCode[i].value == tempAddedActiveOrgsByCode[j]) {
                assignedActiveChnlByCode[i].style.color = "blue";
            }
        }
    }

    for (var i = 0; i < assignedActiveChnls.length; i++) {
        for (var j = 0; j < tempAddedActiveOrgs.length; j++) {
            if (assignedActiveChnls[i].value == tempAddedActiveOrgs[j]) {
                assignedActiveChnls[i].style.color = "blue";
            }
        }
    }
}

adminForm.btnRemove.onclick = () => {
    let frm = document.getElementById('formAdmin')
    let activeAssignedChnl = frm.assignedActiveChnl;
    let inActiveAssignedChnl = frm.assignedInactiveChnl;
    let activeAssignedChnlByCode = frm.assignedActiveChnlByCode;
    let assignedInactiveChnlByCode = frm.assignedInactiveChnlByCode;

    if (document.getElementById("Status1").style.display == 'inline') {
        if (activeAssignedChnlByCode.children.length > 0) {
            let activeChnlByCode = frm.activeChnlByCode;
            for (j = 0; j < activeAssignedChnlByCode.length; j++) {
                if (activeChnlByCode[j].value == activeAssignedChnl.value) {
                    activeChnlByCode[j].disabled = false
                }
            }
        }
        if (activeAssignedChnl.children.length > 0) {
            let activChnls = frm.activeChnl;
            for (i = 0; i < activChnls.length; i++) {
                if (activChnls[i].value == activeAssignedChnl.value) {
                    activChnls[i].disabled = false
                    activeAssignedChnl.removeChild(
                        activeAssignedChnl.options[activeAssignedChnl.selectedIndex]
                    )
                }
            }
        }
    } else if (document.getElementById("Status2").style.display == 'inline') {
        if (inActiveAssignedChnl.children.length > 0) {
            let inactivChnls = frm.inactiveChnl;
            for (i = 0; i < inactivChnls.length; i++) {
                if (inactivChnls[i].value == inActiveAssignedChnl.value) {
                    inactivChnls[i].disabled = false
                    inActiveAssignedChnl.removeChild(
                        inActiveAssignedChnl.options[inActiveAssignedChnl.selectedIndex]
                    )
                }
            }
        }
    } else if (document.getElementById("Status3").style.display == 'inline') {
        if (activeAssignedChnlByCode.children.length > 0) {
            let activeChnlByCode = frm.activeChnlByCode;
            for (i = 0; i < activeChnlByCode.length; i++) {
                if (activeChnlByCode[i].value == activeAssignedChnlByCode.value) {
                    activeChnlByCode[i].disabled = false
                    activeAssignedChnlByCode.removeChild(
                        activeAssignedChnlByCode.options[activeAssignedChnlByCode.selectedIndex]
                    )
                }
            }
        }
    } else if (document.getElementById("Status4").style.display == 'inline') {
        if (assignedInactiveChnlByCode.children.length > 0) {
            let inactiveChnlByCode = frm.inactiveChnlByCode;
            for (i = 0; i < inactiveChnlByCode.length; i++) {
                if (inactiveChnlByCode[i].value == assignedInactiveChnlByCode.value) {
                    inactiveChnlByCode[i].disabled = false
                    assignedInactiveChnlByCode.removeChild(
                        assignedInactiveChnlByCode.options[assignedInactiveChnlByCode.selectedIndex]
                    )
                }
            }
        }
    }
    adminForm.empNumber.value = document.getElementById("employeeNumberValue").textContent;
    clearSearchBoxes();
}