I have some existing users and want to modify some O365 elements but there do not appear to be any O365 elements on any of the templates and it doesn't look as though I can add them as a new template either. Is this the case? I want to add a remote mailbox element to the user as they were created in AD manually and then an O365 mailbox created. They have no remote mailbox attribute so do not show up in my Exchange Admin Console on prem as we are in a hybrid type state at the moment.

Many thanks

DrD