Ricoh Aficio ISC 615G - Manual (Page 169)

Authentication Information
161
7
H
Select [Auth. Info] using {U} or {T}, and then press the {OK} key.
I
Select [User Code] using {U} or {T}, and then press the {OK} key.
J
Enter the user code using the number keys, and then press the {OK} key.
If you have entered a wrong code, press the {Clear/Stop} key and then enter
the correct code again.
You can use up to eight digits for specifying the user code.
K
Select [Permit Functions on Auth.] using {U} or {T}, and then press the {OK}
key.
L
Select the function you want to set the user code for using {V}, and then
press the {OK} key.
M
Press the {Escape} key.