I would think the RM sidebar specifically where the resource is posted to the right hand side. Perhaps an option rather than use a tab (because i can see tabs using up too much space) having a who downloaded sideblock which take into acount permissions for those that can view it perhaps?
Can you please make a screenshot?
When I coded this for a client of mine, I tried it to add it to the sidebar but it did not look too good imho. Hence why it was placed at the tab area as it is more noticeable and handier as well there.