Click Tools > Address Book. Click the address book where the group is located. Click + to expand the address book.
or
Click Address in an item you are composing.
or
Click the Contacts folder in the Folder List.
Right-click or Ctrl+click
the group > click Details. Groups are marked with the icon.
(Optional) To edit a group, see To Add and Remove Contacts from a Personal Group.
For detailed information about what is contained on each tab in a group view, see About Contact Management.