Students can edit their text, remove files, and/or upload a different file if the Workshop is still open and in the Submission phase.
Changing your workshop submission
Click the Workshop link.
Click Edit submission.
On the Instructions for submissions page, change the Title, Submission Content, and download, rename, move or delete files. (If you have submitted the maximum number of files, you will need to delete one or more files before being able to uploadanother one.)