In Course Navigation, click the People link.
Click the name of the group set.
Confirm you have created all the groups for this group set. If you need more groups, you can create additional groups manually.
Click the Options menu [1], then click the Randomly Assign Students link [2].
If you want to require group members to be in the same section, select the Require group members to be in the same section checkbox.
Click the Okay button.
View the group assignments. You can move students between groups if necessary.