What exactly does NotePerfomer do, and to what extent can I tweak its output in Dorico?

While I love and admire NotePerformer’s lifelike ‘performances’, there are often instances where I would like to tweak its output just a little bit, especially dynamics-wise. Is this even possible? Or does NotePerformer simply override any changes in midi-parameters that I make in Dorico?

Input by someone more knowledgeable about the technical details of NotePerformer would be warmly appreciated.

Following…

NotePerformer has a manual.

That should help with tweaking.