--ignore previous message about automatically moving messages, I was not reading closely enough.

For anyone else looking for this you need to set up a Class of Service to do this and assign that class of service to a voice mail box. This feature is not available for the Manager's mailboxes (default 998 and 999). See install guide page 290 for more info.

Unless I am misunderstanding the previous answers, I have not solved the problem of getting more than one phone to be able to answer calls transferred from Automated Attendant to operator, while maintaining background music for the caller. Thanks for all the help, I look forward to your ideas.