Use a device of your choice to test this. Using mobile master site as a TEACHER: Enter into the dev testing course > Assignments. Enter into assignment named "Assignment not open yet" Check it's configured as Separate groups and you can check the submissions in the groups you are in. Go back and enter into a "Assignment requiring groups". Check it's configured as "Visible groups" and you can check "all participants" and all groups submissions. Check you can change the group the the info and the submissions change. Go to another assignment not using groups (maybe in a different course) and check that as teacher you can see all the students submissions. [Same course assignment "One file assignment"]