Every Work Group ("Group" to a regular PT user) has two admin-side User Groups automatically associated with it upon creation. Say you create Work Group "Eye Defects Clinic". The two User Groups created automatically will be called:
1) Eye Defects Clinic
2) Eye Defects Clinic Administrators
As far as I can tell, Group #1 is not visible to a regular user in any capacity. Group #2 appears in the Members list for the Eye Defects Clinic (work) group.
1) As an administrator, navigate to Administration > PhenoTips > Work Groups
2) In the "New Group" field at the top of the list of groups, enter a name (eg "Eye Defects Clinic") and click Create
3) On the Edit page that comes up upon creation, change the group's name (eg "Coloboma Clinic"). Save and view summary.
Expected behaviour: The summary's members list contains an Administrators group called "Coloboma Clinic Administrators".
Actual behaviour: The summary's members list contains an Administrators group called "Eye Defects Clinic Administrators". More to the point, it is generally impossible to edit the names of User Groups, so the admin could not go back and rename the two associated User Groups and would have to personally remember which Admin group represents which Work Group.
(This may be a problem with the XWiki platform rather than PT.)