On the Attix5 Pro Storage Platform, a Backup Administrator on the Collection level can create other collection-level Backup Administrators within the same Collection - e.g. TopCollection\SubCollectionB.
For example, SubCollectionB administrator, john.smith, can create another administrator, dave.jones, with the same rights as himself. Both john.smith and dave.jones can then create other non-admin "View Only" and "Group Admin" users within the groups of SubCollectionB.
If either administrator tries to change the other’s password, they encounter an error:
“Server returned a fault exception:  A collection group admin may not create a top level admin user.”
Whilst the error message is misleading and refers to a “top level admin user”, the actual problem is that collection-level administrators are not able to reset each other's passwords.
If a password reset is needed, contact the Top-Level Backup Administrator for the Storage Platform and they will be able to reset the collection-level administrator’s password.