Ricoh Aficio MP 161SPF - Manual (Page 151)

Registering Names
143
7
F
Enter the new name, and then press the {OK} key.
G
To change a registration number, press [Reg. No.]. Using the number keys or
a Quick Dial key, enter a new number, and then press the {OK} key.
H
Press the {OK} key.
I
Press the {User Tools/Counter} key.
Reference
"Entering Text", About This Machine