Important notice: before following this guide, make sure that you have an active GTM account.
In order to integrate GTM with your quiz you will have to insert it's code.
To do that, on GTM website go to Admin page => Install Google Tag Manager
We only need the first code sample. Copy it.
Then, in your quiz editor, go to Integrations tab and click Custom code button.
In the appering window, paste the GTM code that you've copied earlier and apply
changes by clicking the Save button.
All set! GTM is integrated with your quiz.