modify access rights in CMC for a user in two different groups

Hi guys

I am working on BO 4.1

I have a situation where I want to include a user to a new pilot group for testing a Webi report with 'input controls'

Now this user is already a member of a group where some restrictions are put in place for these members where they cannot view 'input controls' in a Webi report.

Is there a workaround for it using Custom - access level?

Regards