Adding Google Tag Manager to your page is done in three easy steps.
1. Grab the container ID from GTM, i.e. GTM-XXXXX;
2. Open the page builder by clicking Edit Design in the Experience Manager interface.
3. Go to Settings - Analytics;
4. Select Google Tag Manager from the Analytics tab;
5. Now paste the container ID in the designated field, then Save and Update the page.
And that's it, now you can track events from your page directly in GTM.