When a person adds a contact, the new contact message offers choices.
When you add a contact to your Contact List, Communicator 2007 assigns that person an access level. If the new contact is in your company, the access level is Company. That's logical. If the new contact is not in your company, the access level is Public.
What about the reverse? When someone adds you to a Contact List, Communicator 2007 sends you a message. You can accept or reject the request to join that person's list, right in the message. You can also set the person's access level, right in the message. Select This person's level of access, select an access level, and then click OK.
And if you want to change an access level later? You learned that just a moment ago.