Login to ObieMail using your e-mail account information
select the Addresses tab
click on New Group
enter a name for the group in the Group Name box
select users from the list at the left and click Add to add them to your Group (i.e., Address Book)
if all the users desired are not in the list at the left, once you've created the Group, click OK, then add the desired contacts by selecting New Contact and entering the applicable contact information.