Configuring Z probe pins on Duet 3 6hc

Hello!

I am using the Ooznest Control software to control a V1 Engineering lowrider cnc-machine, using the Duet 3 6HC control board, as it is superior to the default Duet DWC. It seems to work fine so far, but when trying to configure the pins for my z axis touchplate, the only endstop pin options available are the X, Y, Z, E0 and E1 pins, which are available on the Duet 2 board but not on the Duet 3 6HC. How could I go about modifying the code of the Oozenest Control Software to have the correct pin options for my board? On the 6hc the endstop pins have been renamed to generic IO_(number) pins as per this pinout.

Thanks in advance.