Where to find group information (table for reports)

Where to find group information (table for reports)

I am making reports in Zoho Analytics and need to do some filtering.
 

Some of the users belongs to certain groups and I would like to use this as a filter.

The issue is that I can’t find the data table that as this information. 

I have everything check in the import, so I am taking all tables and all entry in all the tables and don’t see that information anywhere.
 

Is it possible that this information is not stored in a way that we could access for query purposes in reports?