Hi There, we have one standard exchange server with all the roles, except UM, all the users are standard license users, my company would like to add UM to the same box, so we are looking to add enterprise Licenses and enable UM server role, Can you please let me know how to do that if it possible on the same server. Thanks in advance William

First make sure you've purchased E2K7 Enterprise CALs for your users. Then you simply add the Exchange UM role to your existing server via setup.