1) Dial the voicemail hunt group number
2) As soon as you hear "Welcome...", press *
3) When you hear "Please enter your mailbox number", press 999 (or look at VM Mailboxes to see what the administrator's mailbox number is)
4) When you hear "Welcome the administrator, please enter your pascode", enter the pascode (the pascode can be set in VM Options)
5) When logged in, select 2 (Make sure "Enable TUI edit, delete of mailboxes" in VM Options is enabled)
6) Then select 2 to edit the mailbox, enter the extension and the press # few times until you hear "Please enter a technician function code", enter the code then
Please search for a "Mailbox Greetings" page in the embedded help for more details.