A Guide to Creating Service Users which have admin rights, so that they can be used as a service account when connecting to third-party services
Sign into the Google Workspace Admin Console
Select Admin Roles, under Account
Select Super Admin, then click Assign Admins
Click Assign Members
Enter your Service Account User (by email address or name)
Click Assign Role
That's it!
Your user now has limited (but sufficient) admin privileges to be used as a service account.
Sign into the Meeting Room 365 App
You can now continue to create your meeting room displays via https://admin.meetingroom365.com/