To Assign a license go to "Setup > Installed Packages > GTM Integration > Manage Users 

NOTE:  GoToWebinar Application features 4 tabs; the above users will only see/access our App if they been given a license, and their related profields have accessibility/visibility to the following tabs. 

  • Webinars
  • GoToW Set-up
  • GoToWebinar Users
  • Questions
  • Registrants
  • You will also need to Enabled all of the Visualforce Pages that start with CRMG_GTM (per Profile)