Use this property page to view or change the list of groups that this object is a member of. This object is automatically security equivalent to these groups. If you add or delete a group in this list, the system automatically adds or deletes this object in that group's Members property.
Add
Click this button or press Insert to add this object as a member of one or more groups.
Delete
Click this button or press Delete to remove this object as a member of the selected
groups. Ctrl+click or Shift+click to select multiple groups.