Assignment - How to revert a file submission to a draft
This will allow the students to add additional documents to their submission. (Only if you allow more than one file submission)
Click on the assignment itself from the Moodle Course Main page.
Click on the View/grade all submissions.
Place a check in the box to the left of the approprate studetn. Go to the bottom of the page. Using the With selected... drop down select Revert the submission to draft status. Finally click on Go