I just saw on youtrack.jetbrains.com new issue screen that once you select "Feature" issue type, some of the fields get locked and preset (they are no longer clickable to edit).
How do you accomplish this? Can you show/hide fields on the new issue form based on issue type? how about based on the logged in user's group memberships?
I know there's private/public fields, but I'm asking for further control than just private vs public.