The X32 uses "Bus 9-16" as dedicated FX Returns by default (Bus 9 = FX1 Return, Bus 10 = FX2 Return, etc.). Do not repurpose these buses if you want standard FX operation.
The master engineers know how to take the Snare Plate preset, change the decay from 1.5s to 2.2s, add a 2kHz EQ boost on the return, and save it as a new user preset. X32 effects presets