6. The method of claim 1 , wherein the user group configuration settings specify an authentication method to authenticate the users in the user group.
6. The method of claim 1 , wherein the user group configuration settings specify an authentication method to authenticate the users in the user group. 7. The method of claim 6 , wherein sending the user group container document over a public network to each of a plurality of client devices comprises authenticating users of the client devices according to the authentication method.