Logic Pro X Change the instruments in a score set
You can add instruments to a score set, replace an existing instrument with a different one, and change the order of instruments.
Add an instrument to a score set
Do one of the following:
Set the insert mark where you want to add an instrument, then choose New > Add Instrument Entry.
Double-click below the instrument list.
Replace an instrument in a score set
Click-hold the name of the instrument you want to replace in the Instrument column, then choose an instrument from the pop-up menu.
Reorder instruments in a score set
Select the instrument you want to move by clicking in the margin to the left of the instrument name.
Cut or copy the instrument.
Click in the margin to the left of the instrument list at the point where you want to add the instrument, then paste the instrument.