I'm new to Service desk and was wondering if there is a way to hide solution topics from groups of users.Our solution topics are named after the company which makes it easy for our technicians to add solutions but even if we publish the solution in the self-service portal and define a user group, the whole solution topic tree is visible even if its not accessible. 

Is there anyway that only the relevant topic that have been published to a specific group can be visible? 

Thank you.