At the central project screen 'overview' important documents can be shown right downunder. Selection of the priority of the shown documents here is done with up/down selectors. If there are 5, 10 or more 'important' documents, changing priorities is challenging/time consuming.
This can be solved by entering the priority manually for a (new) document here, and shifting all other automatically, i.e. the way it is done with tasks/WBS.