MIGX Permission Policy

I have a site with tree profile user:
- Super Admin
- Content Editors
- Offers Editors

Offers Editor insert the real estete offers in custom migx tabel. But i don't want that Offers Editors change/delete the Offers of the other Offers Editors user. Is possible do this ?
Content Editors and Super Admin can modify and delete all Offers.

I Try do this where on "MIGXdb-settings":


but don't work.