Extract parts from the score
You can quickly extract a single instrument from the score, instead of creating a score set for every instrument in order to produce parts.
Using this method, only the track instrument names are used as instrument names in the score. So, if you use this method to print your parts, you see the real instrument names of the instruments as displayed in the Tracks area.
Extract an instrument part
Option-click the Score Set pop-up menu at the top of the inspector, then choose the instrument from the list.