@gary_bergreen , it depends on whether you want students to have access to both files. In general if a students submits a file on day 1 and a different file on day 2, you as the Instructor will still have access to both files in Speedgrader for that student (there will be a pull down that allows you to select which one you want to view). Yet, the student will only see the most recent submission, so the one that was submitted on day 2.
Does this make sense/answer your question?
Hi @gary_bergreen ...
In addition to the great advice that you've received from @kona , here is the Guide that explains what this looks like from the instructor's perspective: https://community.canvaslms.com/docs/DOC-13088-415255024 (check out the section near the bottom called "Evaluate Multiple Submissions").
I hope this helps, Gary.
Hope everything is going well for you and yours.
Thanks - I got it figured out
Always glad to hear from you
G. Bergreen, computer Professor