Would like some advice on autoassigning manually created requests to certain technician groups

We have created technician groups with specific email addresses so that incoming emails get automatically assigned to that particular group. We have also setup appropriate roles that restrict each group from being able to view tickets in other groups for security’s sake.

However, this does not address the issue of tickets that are created manually by the technicians themselves. At this point any new ticket that is manually created by a technician has to have the group designation manually assigned by same technician. If a technician forgets to assign their ticket to their group, that ticket is then visible to all groups.

Is there any way to set up the requests so that if a technician from a particular group creates a ticket, that ticket is automatically assigned to the group the technician belongs to? We would like to make ticket creation as foolproof as possible. We are currently using v8.0.0 build 8008

thanks much for any replies