Rick, thank you so much for your answer to Aubrey's question. Your solution worked for me too. I have an instructor with three cross-listed sections of 200, 45, and 49 students. He wanted to limit discussions to the individual sections.

Using your solution, I performed the following when creating a group set for three individual sections which worked beautifully.

1. Did not allow self sign-up
2. Split students into 3 groups
3. Required group members to be in the same section.
4. Did not assign a student group leader

Best Regards, Liko