How to use a JS SDK Payment API for Woocommerce WordPress website at checkout?

The payment gateway provider has a wordpress plugin but it does not have all the gateway functions built in and also they have a seperate portal made available to merchants to get following data;

Merchant ID :
LC13106
API Key :
Merchant Secret Key :
Confirmation Endpoint
Endpoint

Private key

Download
Server Public key

Download
Public key

Download

Their most uptodate plugin can be downloaded here;
https://www.npmjs.com/package/directpay-ipg-js

IPG User Wise Card Management API Documentation https://justpaste.it/7w34p

IPG Integration Payment Link V1.0.1 Integration document https://justpaste.it/gj7ny

I need support to help setup all this on wordpress explain steps need to setup as If I know nothing about JS, HTML, CSS or APIs

Installed plugin provided by them and researched all options inside their merchant portal but those functions provided by sdk seem to have no GUI to be easily accessed and edited