Dossier uses the UserGroups addon to manage 2 default properties:
URL and ICQ

These are user-only properties - they do not exist for groups.

The properties are both modifiable by the current user, which means that even a "Standard User" can change their own details!

You may add or remove properties from this addon freely...it should be very easy to do so by example.

In order to make sure that you have the absolute latest version of the UserGroups addon (required) I am not offering Dossier as a separate download. You must download npa_usergroups.zip