Noob poster here, so be kind.

Two problems, but I'll start with what seems the most simple first.
Here's the scenario: System/228 with Infostar VX, 12 active users. VMS works fine for 11 users. The 12th user can enter password, check messages, etc., but does NOT get the system prompts to change personal options (dial 3) or check delivery (dial 4). Obviously, it used to work, but doesn't now. Is there any way to reset this user's mailbox to get those two options back? (The last person who serviced the system has died, and we don't know the password for the manager's mailbox, if that makes a difference.)
Thanks in advance,
Brian