Hi @eebailey Interesting question and I had to find out. I tested this. I created a group assignment and created two test self-signup groups. I logged in as a sample student I use for testing. I was able to submit to the assignment. I also added another sample student to a group and submitted the assignments. Back in SpeedGrader in instructor view - I was able to enter a grade for the individual student and the second submission appeared in the group.

I hope that helps. 🙂