HA Yellow with Raspberry CM4 with bluetooth

Configuration
1

I have HA Yellow with a Raspberry CM4 with Bluetooth. I cannot find any information on configuring the bluetooth.

2

Well, then lets look at Raspberry Docs: https://tutorials-raspberrypi.com/setting-up-raspberry-pi-3-wi-fi-and-bluetooth/

Then there is this: Bluetooth - Home Assistant

You would follow the directions in the the last link to add Bluetooth. It scan you PI an adds the integration, which is where you do the configuration