start with one page, push down multiple trigs and set them all to trig conditions, then just make page longer and it makes copies, then change your notes on the other pages? Or hold multiple trigs with your trig condition setting, copy paste?
iirc a TRC can be set without trigging a note, take the shortcut hint, adapt it or leave it; you can’t apply any p-locks across a whole track with any hidden mode - I’d like that ability to set track-wide probability too, but this is where we are - File a feature request
TRCs are a per step sequencer parameter - they can only be used if they’re actively locked in - there’s no default/baseline beyond off
PS - I don’t know the nuances of the DN seq where note entry and trigs are using the same buttons - things may be different to the analogs