Groups
Notes/Domino's security model uses groups to define user access in many places - e.g. the database ACLs. There maybe mailing lists defined by groups as well. If an administrator uses a lot of groups, it's important to know to which group(s) a particular user belongs.

Is there a problem?
If no nested groups are used, the answer to this question is easy. Open the Domino Directory, switch to the 'Groups' view and do a search on the users name. The result of that search shows all group documents containing the users name - not nessesary stored in the 'Group Members' field, the name may also be contained in the fields 'Owner(s)' or 'Administrator(s)'. But you sure will find the right groups.

There is a problem!
If groups are nested (one group is a member of another group which is a member of another group which...), a simple search will not not show all memberships for a user.

Sample
- John Doe is a member of 'Group A'
- 'Group A' is a member of 'Group All'

A simple search will only find the 'Group A' document.

And there is a solution
Starting from Notes R5, there is a build-in tool in the Administration Client available.

Start the Administration Client an select the 'People & Groups' tab.
Select 'Groups' in the left navigation pane.
Select 'Tools' -> 'Groups' -> 'Manage' on the right side.

The following dialog is shown.

Select a particular user in the left listbox and set the option 'Show me' to 'Only member hierarchies'. Now you see all the related groups on the right listbox - including the nested-group-memberships. Expand an entry to see the nested groups.

Notes/Domino Version: 5.x, 6.x, 7.x

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