Canon EOS R5 Advanced User's Manual page 456

2.
Select the self-timer/remote control.
Turn the <
< > dial to select [
3.
Press the release (transmit) button on the remote controller.
Point the remote controller toward the camera's remote control sensor
(1), then press the release (transmit) button.
Autofocusing is performed when the focus mode switch is set to
< >.
The remote control lamp lights up, and the camera shoots.
> dial to select the drive mode item, then turn the
] or [
456
].