Hide 'Public' records for a group SMAX

Hello,

We need to hide the 'Public' domain requests from a specific group, we want that group to only see 'Domain1' records, we already created a data domain and primary domain called 'Domain1' and assigned them to this group, but the persons on the group can still see the Public records when they enter the Request / Incident interface (we even changed the user's domains to 'Domain1' too but they can still see public records)

Can you please help?

Thank you in advance,

Kind regards.