Hi @solomon_klein - While I normally work with faculty who have students submit files rather than media assignments, for the sake of clarity are you certain that there is nothing under the drop-down menu for previous submissions to the group, such as what is shown under the Evaluate Multiple Submissions heading in this online lesson: How do I view the details of a submission for a student in SpeedGrader? ? Normally, while a second group submission seemingly overwrites the first one, the first one(s) should be seen as "previous submissions" within SpeedGrader....no? Again, I may be mistaken about this for media submissions.
If you do spot them as previous submissions, I suppose one method is--since it's an oral presentation--might be to identify the speaker. Obviously, that's quite labor-intensive, but unfortunately the basic answer to your real question is "no" (alas). I encourage you to check out some of this comments (and the Feature Idea link) to a similar question posed awhile ago: Is there a way to see which student submitted for a group?
But the reality is that there is no simple way to identify who submitted something, I'm afraid.
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