Microsoft PRO 906EX - Manual (Page 237)

Registering a Protection Code
229
7
F
Press [Protection].
G
Press [Destination] or [Sender] under Use Name as.
Both [Destination] and [Sender] can be selected at the same time.
H
Press [Change] under Protection Code.
I
Enter a protection code using the number keys, and then press {#}.
J
Press [OK].
K
Press [Exit].
Note
❒ You can specify a protection code of up to eight digits. You can also specify
“Protection” without specifying a protection code.