Remote Controller; Remote Id; Remote Mode - Onkyo TX-NR545 Manual

Advanced Settings (Setup Menu)
7. Remote Controller
Remote ID
Default Value: 1
Select an ID for the unit's remote controller from "1", "2", and "3" to
prevent interference between the unit and other Onkyo components
that are installed in the same room. After changing the ID on the main
unit, change the ID on the remote controller accordingly with the
following procedure.
1. While holding down RECEIVER, press and hold SETUP for about 3
seconds until the remote indicator lights.
2. With the number buttons, press one of 1, 2, and 3. The remote
indicator flashes twice.
Remote Mode
Default Value: –
Input and register the remote controller code of other devices.
For registration of the remote control code, refer to "Operating Other
Components with the Remote Controller".