How can I unassign all students from all groups in a group set at once?

[j_strohhecker]

I need to undo and redo a random assignment of students to groups. How this is best done without deleting the whole group set?

[kona · Accepted solution]

 @j_strohhecker , greetings! Unfortunately, I can't think of a way to undo random assignment of students into groups without deleting the different groups/group sets. 

Kona