1. Add your Google Tag Manager
2. Publish your Pages
To apply Google Tag Manager to your Fanpage or any existing landing pages, re-publish those pages after completing the setup. New pages created after GTM is connected will have it applied automatically. If you disconnect or change your GTM configuration, re-publish your pages for the change to take effect.
⚪ Note: GTM tags can be applied to individual landing pages directly, but setting one globally via Settings > Integrations applies it to all landing pages created and published after that point.