Only the head coach (owner) of the account has the ability to delete files/folders in the Resource Room.
Resource Room is directly connected to a Dropbox account - a work around other clubs have used is to create a shared Dropbox account which admins have direct access (via Dropbox) to. You can then access the Dropbox account directly and edit/delete files and folders.
There is no possibility to integrate more than one Dropbox account.