Google Tag Manager
Google’s Tag Manager makes it easier for business owners and marketing staff to track various types of information and browsing of a web site.
To read more about signing up for this service, click here.
Click ‘Settings’
Navigate to System > Setup > Settings.
Click ‘Integrations’
Enter your Google Tag Manager ID
If you do not know your Google Tag Manager ID, click here to read more.
Click ‘Save’