Two completely different audiences can now choose a topic that's not ment for them

Two completely different audiences can now choose a topic that's not ment for them

Hi,

We have two completely different audiences that we send email campaigns regularly. 

We migrated to topics and have two topics one for our audience 'employers' and one for our audience 'candidates'. Our newsletters are not ment for both audiences, and it's really unwanted that they can choose all our topics if they change their preferences.

How can we solve this? 

Best regards, AcademicTransfer