I want to permit certain colleagues to be able to move tickets between statuses. At the moment they can see their Requests from the customer portal, but can't see the project "back end" (not sure how do you call it, but they can't view the list of all tickets from the main project page). They can add comments, raise tickets, but they can't update statuses. What do I need to do? (step by step) Does this require an additional license or something? Thank you