As best I understand what you have said, I would have to say that this is not what BIAB can help you with. Do you actually write notation to the staff lines? If so, then best to use something like Musescore which is free. It will overlay multiple staff and allow you to write and play each individual instrument as one composition. Or, do you play-in and move midi notes on the piano roll? That can be done nicely in your DAW for multiple instruments.

Good luck



BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6