I have a X Serve with Time Machine drive supported enabled. Some users are using too much of the backup drives. Is there a way to slim this down by setting a maximum 30-day period to allow these backups to be kept. As of now one user can allocate 50G and one can allocate 800G. It does not have a limit and everyone will be prompted to delete older backups when the disk is full. This just seems to be a fair way to use the X Serves drives.