Any admin user can give admin rights to another user account directly from the directory page.
Using the three dots menu on the right of the table:

User will be notified by email
User will have to sign out and sign back in
Any admin user can give admin rights to another user account directly from the directory page.
Using the three dots menu on the right of the table:
User will be notified by email
User will have to sign out and sign back in