Radarcape feeding FA first time

Hi
I just got Radarcape planing to feed FA as I understand I need to copy the MAC address from Radarcape and create a FA user name with this address, unless I’m wrong,
Now if I’m holding FA account and feeding via Ra Pi can Radarcape feed the same account,
Appreciate the help and the information

Regards
Ahmad

There are instructions here: Radarcape:Radarcape Major 2 Feeder Installation - Beast Wiki

The Radarcape will be set up as a new ADS-B site on your existing FlightAware account.