U.Fl connector in NFC Groove

I have checked the schematics in NFC Groove board I have one question about u.Fl connector used in NFC groove usually the u.Fl connector one pin is antenna signal and remaining pins are ground right but in the schematics one pin is used for one antenna signal and all other pins are are tied and used for other antenna signal so can I use the same way in my custom board the same way or is there u.Fl connector where we can use two antenna signals?