Xavier PRSNT0 and PRSNT1 signals

I have some questions.

I what to design my carrier board, and I do use the Power-on-No MCU mode.
So how can i use the PRSNT0 and PRSNT1 signals, because there is no use of the signal of D_ONKEY_N in the Power-on-No MCU circuit.
Can I leave the PRSNT0 and PRSNT1 signals floating(no connnect to other signal or part)?

PRSNT0 and PRSNT1 are to guarantee no mistaken power button pressing during module attaching on carrier board. You can leave them floating if no power button in your design.

OK i get it ,thanks