Google Tag Manager (GTM) is an extremely powerful tag management system that allows you to add and update website tags without having to touch your site or mess with code! Once you've integrated your GTM account with your FMG Suite website, you can simply log in to your GTM account to add and update tags such as Google Analytics, Google AdWords and other page-level and site-wide tracking pixels.
To integrate your Google Tag Manager account, you'll first need to navigate to Website >> SEO:
On that page, you'll find a Google Tag Manager section:
Simply enter your GTM Tracking ID, and click "Publish" to submit your integration to compliance. Once approved, your website will be integrated with your GTM account!
Below are some helpful resources: