What are your best methods for user testing in Claris FileMaker Cloud?

Testing an app that will have different behaviour, depending on which user group is logged in. In an on-prem solution it's relatively easy to be logged in at the user level then temporarily login as a full access user to enter the debugger. There doesn't seem to be any way to do the same thing for claris-fm-cloud solutions.

What are your best suggestions for handling this situation?