I have some teachers complaining about how some of their students submit assignments documents from their Google drive, and the teachers cannot see the submission unless they log into their own Google account & then the docs are all shared with them. Over time they accumulate many many shared assignment docs. Is there some setting in their assignments that they can modify to NOT allow any google drive submissions? The students can submit if they download their file & upload it straight into the assignment. OR is there some type of permission the student needs to add to the document in their drive, before submitting it? The teachers just don't want to have to log into Google & they don't want a bunch of shared files in their own drive.