Group choice allows students to select one or more groups they wish to be a member of in a course. Following their choice, they are automatically enrolled in the group(s) of their choice.
The Group Choice activity is similar to other Moodle activities, make sure to choose the one most suited to your needs:
Before using the Group Choice activity, you must create the groups you want to use. Use the instructions on the Creating and Managing Groups page of this guide to create new groups or double check that your desired groups/groupings have already been set up.