Datatable: How to put sorting on the first header row (by default sorting is put on the second row)

I am having a problem with sorting.

By default it is put on the second header line but I want it on the first and not on the second.

The second header row may seem silly when viewed like this, but in reality I will use this to search for each respective column.

Below is a working example of what is happening to me.

$(document).ready( function () {
  var table = $('#example').DataTable({
    colReorder: true,
    "footerCallback": function ( row, data, start, end, display ) {
      var api = this.api(), data;

      // Append footer if it doesn't exist
      if ($('#example').find('tfoot').length ===0) {
        var footer = $('<tfoot><tr><th colspan="6">g</th></tr></tfoot>');
        $('#example').append(footer);
      } 

      // Remove the formatting to get integer data for summation
      var intVal = function ( i ) {
        return typeof i === 'string' ?
          i.replace(/[$,]/g, '')*1 :
        typeof i === 'number' ?
          i : 0;
      };

      // Total over all pages
      total = api
      .column( 5 )
      .data()
      .reduce( function (a, b) {
        return intVal(a) + intVal(b);
      }, 0 );

      // Total over this page
      pageTotal = api
      .column( 5, { page: 'current'} )
      .data()
      .reduce( function (a, b) {
        return intVal(a) + intVal(b);
      }, 0 );

      // Update footer
      $( '#example tfoot th:eq(0)' ).html(
        '$'+pageTotal +' ( $'+ total +' total)'
      );
    }
  });



} );
<!DOCTYPE html>
<html>
  <head>
    <script src="https://code.jquery.com/jquery-1.11.3.min.js"></script>

    <link href="https://nightly.datatables.net/css/jquery.dataTables.css" rel="stylesheet" type="text/css" />
    <script src="https://nightly.datatables.net/js/jquery.dataTables.js"></script>
<link href="https://cdn.datatables.net/colreorder/1.5.3/css/colReorder.dataTables.css" rel="stylesheet" type="text/css" />
<script src="https://cdn.datatables.net/colreorder/1.5.3/js/dataTables.colReorder.js"></script>

    <meta charset=utf-8 />
    <title>DataTables - JS Bin</title>
  </head>
  <body>
    <div class="container">
      <table id="example" class="display nowrap" width="100%">
        <thead>
          <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
          </tr>
          <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
          </tr>
        </thead>


        <tbody>
          <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>2011/04/25</td>
            <td>$3,120</td>
          </tr>
          <tr>
            <td>Garrett Winters</td>
            <td>Director</td>
            <td>Edinburgh</td>
            <td>63</td>
            <td>2011/07/25</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Ashton Cox</td>
            <td>Technical Author</td>
            <td>San Francisco</td>
            <td>66</td>
            <td>2009/01/12</td>
            <td>$4,800</td>
          </tr>
          <tr>
            <td>Cedric Kelly</td>
            <td>Javascript Developer</td>
            <td>Edinburgh</td>
            <td>22</td>
            <td>2012/03/29</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Jenna Elliott</td>
            <td>Financial Controller</td>
            <td>Edinburgh</td>
            <td>33</td>
            <td>2008/11/28</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Brielle Williamson</td>
            <td>Integration Specialist</td>
            <td>New York</td>
            <td>61</td>
            <td>2012/12/02</td>
            <td>$4,525</td>
          </tr>
          <tr>
            <td>Herrod Chandler</td>
            <td>Sales Assistant</td>
            <td>San Francisco</td>
            <td>59</td>
            <td>2012/08/06</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Rhona Davidson</td>
            <td>Integration Specialist</td>
            <td>Edinburgh</td>
            <td>55</td>
            <td>2010/10/14</td>
            <td>$6,730</td>
          </tr>
          <tr>
            <td>Colleen Hurst</td>
            <td>Javascript Developer</td>
            <td>San Francisco</td>
            <td>39</td>
            <td>2009/09/15</td>
            <td>$5,000</td>
          </tr>
          <tr>
            <td>Sonya Frost</td>
            <td>Software Engineer</td>
            <td>Edinburgh</td>
            <td>23</td>
            <td>2008/12/13</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Jena Gaines</td>
            <td>System Architect</td>
            <td>London</td>
            <td>30</td>
            <td>2008/12/19</td>
            <td>$5,000</td>
          </tr>
          <tr>
            <td>Quinn Flynn</td>
            <td>Financial Controller</td>
            <td>Edinburgh</td>
            <td>22</td>
            <td>2013/03/03</td>
            <td>$4,200</td>
          </tr>
          <tr>
            <td>Charde Marshall</td>
            <td>Regional Director</td>
            <td>San Francisco</td>
            <td>36</td>
            <td>2008/10/16</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Haley Kennedy</td>
            <td>Senior Marketing Designer</td>
            <td>London</td>
            <td>43</td>
            <td>2012/12/18</td>
            <td>$4,800</td>
          </tr>
          <tr>
            <td>Tatyana Fitzpatrick</td>
            <td>Regional Director</td>
            <td>London</td>
            <td>19</td>
            <td>2010/03/17</td>
            <td>$2,875</td>
          </tr>
          <tr>
            <td>Michael Silva</td>
            <td>Senior Marketing Designer</td>
            <td>London</td>
            <td>66</td>
            <td>2012/11/27</td>
            <td>$3,750</td>
          </tr>
          <tr>
            <td>Paul Byrd</td>
            <td>Javascript Developer</td>
            <td>New York</td>
            <td>64</td>
            <td>2010/06/09</td>
            <td>$5,000</td>
          </tr>
          <tr>
            <td>Gloria Little</td>
            <td>Systems Administrator</td>
            <td>New York</td>
            <td>59</td>
            <td>2009/04/10</td>
            <td>$3,120</td>
          </tr>
          <tr>
            <td>Bradley Greer</td>
            <td>Software Engineer</td>
            <td>London</td>
            <td>41</td>
            <td>2012/10/13</td>
            <td>$3,120</td>
          </tr>
          <tr>
            <td>Dai Rios</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>35</td>
            <td>2012/09/26</td>
            <td>$4,200</td>
          </tr>
          <tr>
            <td>Jenette Caldwell</td>
            <td>Financial Controller</td>
            <td>New York</td>
            <td>30</td>
            <td>2011/09/03</td>
            <td>$4,965</td>
          </tr>
          <tr>
            <td>Yuri Berry</td>
            <td>System Architect</td>
            <td>New York</td>
            <td>40</td>
            <td>2009/06/25</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Caesar Vance</td>
            <td>Technical Author</td>
            <td>New York</td>
            <td>21</td>
            <td>2011/12/12</td>
            <td>$4,965</td>
          </tr>
          <tr>
            <td>Doris Wilder</td>
            <td>Sales Assistant</td>
            <td>Edinburgh</td>
            <td>23</td>
            <td>2010/09/20</td>
            <td>$4,965</td>
          </tr>
          <tr>
            <td>Angelica Ramos</td>
            <td>System Architect</td>
            <td>London</td>
            <td>36</td>
            <td>2009/10/09</td>
            <td>$2,875</td>
          </tr>
          <tr>
            <td>Gavin Joyce</td>
            <td>Developer</td>
            <td>Edinburgh</td>
            <td>42</td>
            <td>2010/12/22</td>
            <td>$4,525</td>
          </tr>
          <tr>
            <td>Jennifer Chang</td>
            <td>Regional Director</td>
            <td>London</td>
            <td>28</td>
            <td>2010/11/14</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Brenden Wagner</td>
            <td>Software Engineer</td>
            <td>San Francisco</td>
            <td>18</td>
            <td>2011/06/07</td>
            <td>$3,750</td>
          </tr>
          <tr>
            <td>Ebony Grimes</td>
            <td>Software Engineer</td>
            <td>San Francisco</td>
            <td>48</td>
            <td>2010/03/11</td>
            <td>$2,875</td>
          </tr>
          <tr>
            <td>Russell Chavez</td>
            <td>Director</td>
            <td>Edinburgh</td>
            <td>20</td>
            <td>2011/08/14</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Michelle House</td>
            <td>Integration Specialist</td>
            <td>Edinburgh</td>
            <td>37</td>
            <td>2011/06/02</td>
            <td>$3,750</td>
          </tr>
          <tr>
            <td>Suki Burks</td>
            <td>Developer</td>
            <td>London</td>
            <td>53</td>
            <td>2009/10/22</td>
            <td>$2,875</td>
          </tr>
          <tr>
            <td>Prescott Bartlett</td>
            <td>Technical Author</td>
            <td>London</td>
            <td>27</td>
            <td>2011/05/07</td>
            <td>$6,730</td>
          </tr>
          <tr>
            <td>Gavin Cortez</td>
            <td>Technical Author</td>
            <td>San Francisco</td>
            <td>22</td>
            <td>2008/10/26</td>
            <td>$6,730</td>
          </tr>
          <tr>
            <td>Martena Mccray</td>
            <td>Integration Specialist</td>
            <td>Edinburgh</td>
            <td>46</td>
            <td>2011/03/09</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Unity Butler</td>
            <td>Senior Marketing Designer</td>
            <td>San Francisco</td>
            <td>47</td>
            <td>2009/12/09</td>
            <td>$3,750</td>
          </tr>
          <tr>
            <td>Howard Hatfield</td>
            <td>Financial Controller</td>
            <td>San Francisco</td>
            <td>51</td>
            <td>2008/12/16</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Hope Fuentes</td>
            <td>Financial Controller</td>
            <td>San Francisco</td>
            <td>41</td>
            <td>2010/02/12</td>
            <td>$4,200</td>
          </tr>
          <tr>
            <td>Vivian Harrell</td>
            <td>System Architect</td>
            <td>San Francisco</td>
            <td>62</td>
            <td>2009/02/14</td>
            <td>$4,965</td>
          </tr>
          <tr>
            <td>Timothy Mooney</td>
            <td>Financial Controller</td>
            <td>London</td>
            <td>37</td>
            <td>2008/12/11</td>
            <td>$4,200</td>
          </tr>
          <tr>
            <td>Jackson Bradshaw</td>
            <td>Director</td>
            <td>New York</td>
            <td>65</td>
            <td>2008/09/26</td>
            <td>$5,000</td>
          </tr>
          <tr>
            <td>Miriam Weiss</td>
            <td>Support Engineer</td>
            <td>Edinburgh</td>
            <td>64</td>
            <td>2011/02/03</td>
            <td>$4,965</td>
          </tr>
          <tr>
            <td>Bruno Nash</td>
            <td>Software Engineer</td>
            <td>London</td>
            <td>38</td>
            <td>2011/05/03</td>
            <td>$4,200</td>
          </tr>
          <tr>
            <td>Odessa Jackson</td>
            <td>Support Engineer</td>
            <td>Edinburgh</td>
            <td>37</td>
            <td>2009/08/19</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Thor Walton</td>
            <td>Developer</td>
            <td>New York</td>
            <td>61</td>
            <td>2013/08/11</td>
            <td>$3,600</td>
          </tr>
          <tr>
            <td>Finn Camacho</td>
            <td>Support Engineer</td>
            <td>San Francisco</td>
            <td>47</td>
            <td>2009/07/07</td>
            <td>$4,800</td>
          </tr>
          <tr>
            <td>Elton Baldwin</td>
            <td>Data Coordinator</td>
            <td>Edinburgh</td>
            <td>64</td>
            <td>2012/04/09</td>
            <td>$6,730</td>
          </tr>
          <tr>
            <td>Zenaida Frank</td>
            <td>Software Engineer</td>
            <td>New York</td>
            <td>63</td>
            <td>2010/01/04</td>
            <td>$4,800</td>
          </tr>
          <tr>
            <td>Zorita Serrano</td>
            <td>Software Engineer</td>
            <td>San Francisco</td>
            <td>56</td>
            <td>2012/06/01</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Jennifer Acosta</td>
            <td>Javascript Developer</td>
            <td>Edinburgh</td>
            <td>43</td>
            <td>2013/02/01</td>
            <td>$2,875</td>
          </tr>
          <tr>
            <td>Cara Stevens</td>
            <td>Sales Assistant</td>
            <td>New York</td>
            <td>46</td>
            <td>2011/12/06</td>
            <td>$4,800</td>
          </tr>
          <tr>
            <td>Hermione Butler</td>
            <td>Director</td>
            <td>London</td>
            <td>47</td>
            <td>2011/03/21</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Lael Greer</td>
            <td>Systems Administrator</td>
            <td>London</td>
            <td>21</td>
            <td>2009/02/27</td>
            <td>$3,120</td>
          </tr>
          <tr>
            <td>Jonas Alexander</td>
            <td>Developer</td>
            <td>San Francisco</td>
            <td>30</td>
            <td>2010/07/14</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Shad Decker</td>
            <td>Regional Director</td>
            <td>Edinburgh</td>
            <td>51</td>
            <td>2008/11/13</td>
            <td>$5,300</td>
          </tr>
          <tr>
            <td>Michael Bruce</td>
            <td>Javascript Developer</td>
            <td>Edinburgh</td>
            <td>29</td>
            <td>2011/06/27</td>
            <td>$4,080</td>
          </tr>
          <tr>
            <td>Donna Snider</td>
            <td>System Architect</td>
            <td>New York</td>
            <td>27</td>
            <td>2011/01/25</td>
            <td>$3,120</td>
          </tr>
        </tbody>
      </table>
    </div>
  </body>
</html>

Can someone please help me?