Will Dorico do the math on playback yet for a2, a3, a4 etc. score markings or do I manually have to duplicate each instance with a new instrument/player in the score?
It won’t just ‘double track’ a part if you add an a2 instruction; But if you create 6 players with the same music, and use Condensing to show only one stave in the score, that stave will have ‘a6’ on it automatically. And play back as 6 instruments.