I have a chart of NRPN codes for the stops of our Allen C12 organ. Can I use them to construct an NWC instrument tree? Also, what about an ensemble of stops? For example, if I want to set a staff to play Diapason and Flutes together on the Great?
Unfortunately no. The items that can be put in an Instrument Tree are summarized in Getting started with NWC2 Instrument Trees (https://forum.noteworthycomposer.com/?topic=5536.0)