Lexus OM48A84U Owner's Manual page 370

SETUP
3. Input the phone number and select
"OK".
If you want to use the tone signal after
the phone number, input the tone signal
too.
4. Select the phone type.
372
5. When two or less numbers in total
are registered to this contact, this
screen is displayed.
When you want to add a number to this
contact, select "Yes".