New ArduPilot methodic configurator GUI

In ESC part of Vehicle Component Editor there ESC part and in FC Connection is mentioned SERIAL5 but in my case ( SpeedyBee F405 V3 BLS 50A 30x30 FC&ESC Stack - Speedy Bee ) I am using stack and it seems to me that not SERIAL5 is used but a separate port for connection and it is not really clear what SERIAL is there. What should I do in this situation?

And what is the way to update the configutaion if I already pressed “create…”?

Thanks in advance