After setting up your Domain, the user groups that you configured during your AD setup need to be assigned roles in the Horizon Admin portal.
Select Settings from the left-hand bar, then Roles & Permissions.
Click on a Role to configure (in this example we edit the “Super Administrators” Role). Then select “Edit” below the main heading.
Search for User Groups in the domain, and select a User Group to add to the role. When complete, select Save. The user group specified now has the permissions associated with that Role.