Does anyone know how to set up lk8000 to accept FLARM data via a K6 BT2 box?

I have my vario sending data to LK8000 but can't figure out to get the flarm data. My flarm classic's aux output is connected to the second port on the K6 bt2 box but there are no obvious settings for flarm in LK that I can see.

Ant help is appreciated.

Thanks.