Group recommendations
Product administrators can configure the Change group membership page so that users see recommendations of group memberships to add or delete, based on consistency among the user’s peer group.
A peer group is a group of users with some attribute in common; for example, users working at the same location or department, or having the same manager.
Users show or hide the recommendations when configured by clicking the Recommendations button in the middle panel. Recommendations are visually represented by a color bar with a number stating the percentage of peers who are members. This can help the user to decide whether to add or delete a membership.

In the above screenshot:
Membership is not recommended. None of the user’s peers are members.
Membership is recommended. 25% of the user’s peers are members.
Membership is strongly recommended. 75% of the user’s peers are members.