To integrate Google tag manager,

• Go to tagmanager.google.com and log in with your credentials

• Click Admin

• Click Tags and click New, a window appears

• Enter the Tag title

• Click Tag Configuration

• Select Custom HTML

• Paste the following widget code in the HTML text area
  
  

  <script>
      window.fcSettings = {
        onInit: function() {
          if (typeof(ga) === "function") {
              ga('create', '<GA TRACKING ID>', 'auto', 'FreshchatEvents');
              window.fcWidget.on("widget:opened", function(resp) {
                ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'Widget Open');
              });
              window.fcWidget.on("widget:closed", function(resp) {
                ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'Widget Close');
              });
              window.fcWidget.on('message:received', function(resp) {
                ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'Received');
              });
              window.fcWidget.on('message:sent', function(resp) {
                ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'Sent');
              });
              window.fcWidget.on('user:statechange', function(resp) {
                if (resp && resp.data && resp.data.userState === "created") {
                  ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'User Create');
                }
                if (resp && resp.data && resp.data.userState === "loaded") {
                  ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'User Loaded');
                }
                if (resp && resp.data && resp.data.userState === "identified") {
                  ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'User Identified');
                }
                if (resp && resp.data && resp.data.userState === "restored") {
                  ga('FreshchatEvents.send', 'event', 'Freshchat widget', 'GadgetGod', 'User Restored');
                }
              });
          }
          else {
            console.log('Google Analytics not loaded');
          }
        }
      }
    </script>
  
  <script src='//fw-cdn.com/1*****7/2*****4.js' chat='true'></script> 

  
  

• Click Triggering.

• Select All Pages. 

• Click Save. You will be redirected to Workspace.

• Click Submit. The Submit Changes window appears.

• Enter the Version Name and Version Description.

• Click Publish.

You can also refer to the following video, which demonstrates the above steps.

Note: The above video is only for your reference on where to add the code. It does not contain the code itself. Please refer the link in Step 7 for the actual code.