OK, so on that line of thinking, I could set up a second mailbox for each of the four "essential" personnel, that would forward the emergency message to their cell.

So a call would go - Auto attendant - press 5 for emergency - goes to mb 3501 - cusomer leaves message - forwards to list - goes to the four virtual mailboxes set up (3502, 3503, 3504, 3505) - each of which dials to cell. Turn off the cell phone notification on their regular MB.

Or a customer gets AA, dials extention, goes to VM and stays there dormant till Monday morning.
Set up 3502-3505 with standard PW.
When the client calls into their personal VM to check messages, that procedure will be the same.

Perfect - thank you!

Yes, I am retired - so why am I still working on phones?