Kolab 3 - Primary Email Address

Greetings,

Is there a way to change the primary email address when creating a new 
user (or after creating the user) in Kolab 3? Not all organizations like 
to conform to [email protected]. Also, I need to be able to 
setup a shared mailbox account that many people will access such as 
[email protected], this becomes a little inconvenient when Kolab forces 
you to have a last name (surname).

Thanks.
-- 
Mat