Right now I get the same dialog if I am writing a mail and start selecting users from the Domino Directory, or if I am adding a new user to the ACL. The dialog is fine but the content should be different. (especially for mail addressing).
The entries which ...
Simply add a new categorised view to the Domino Directory, to display all groups by its members.
Additionally embedd this view into the Person-form in such a way that only the groups of the current person are shown. (Its about 10 minutes of work) :-)
And if you want ...