When I add a comment in a regular Jira project, I can limit who can view it - there's a lock icon with a drop-down menu that has All Users/Project Roles/Groups. Let's call this full permission model.
In a Service Desk project (logged in as an Agent), it's different - there are two buttons: Share with Customer and Comment Internally. This is documented and is a good feature.
However, I do have a use case for the the full permission model.
So is there a way to use it in Service Desk?