Administrators of groups have access to an Activity Tab in the Group's page. This tab contains a stream of health updates from group members. These include Avail status updates (i.e. Avail score change from Excellent to Above Average), activities, ailments, and life events. Group Activity is listed by recency of the update. You can click the update to view a group members dashboard and get a detailed breakdown of their health status.
Group members can see the administrators and staff in their group so that they are always aware of who has access to their data. Removing a group member will remove their updates from your Group Activity feed. Removing other administrators or staff will remove their access to the Groups Activity feed and member data.