Which Voice Mail?
VS Mail, no.
Partner Mail, and Partner Messaging, you create a mailbox that points to the Auto Attendant you want to transfer to, and then transfer to that extension.
Partner Messaging, press 2 for Extensions, dial an extension number, then press 3 to assign an auto attendant to it. Then press 1 through 4 to specify which auto attendant.
Partner Mail, use Class of Service. 15 is AA-1, 16 is 2, and 17 is 3.
In Partner Messaging, you might specify it as without a phone for faster transferring, but in the ACS still give the extension auto vms cover and set its vms cover rings to 1