ESPSomfy-RTS-HA integration with rfxusb-rfx433 in HA

Could the kind folks here help out a complete noob venturing into home automation?
I have 4 somfy rts devices that I would like to control through HA.

I bought a rfxusb-rfx433 and followed instructions from below link and added HACS integration.

The next step is where I am lost. I can see the ESPSomfy-RTS-HA under devices however, how do I configure my somfy device? I have put it in program mode and still nothing picked up by HA.

Any help is appreciated.

You have to use the RFXCOM integration: