You can adjust certain features in the config option, including point/decimal, HpA, etc.
The great thing is though that you can use the same ICAO responses that you would always use and P2A seems to understand. Quite how, I do not know but it does it nonetheless. You can set the transition level in the MCDU/FMC as in the real world and P2A respects that
Dave, the developer is also always quick to answer questions. His support is superb.