I have a small ensemble score which includes several percussion instruments, but only one percussionist is required, since only one percussion instrument is played at any one time.
I'm trying to make a separate part including all and only the percussion instruments, but I can't seem to do it. It looked like the part of the manual that says:
Add instruments to a part
To add instruments to an existing part:
Select the part in the "Parts" pane.
Select the instrument from the "Instruments in Score" pane.
Press + to add it to the "Instruments in Part" pane.
OK, so I click on File/Parts and get a pane labelled Parts.
In that pane in the Select Part area I click on Bass Drums, and that item is highlighted.
But I cannot "Select the instrument from the 'Instruments in Score' pane" because all the instrument names in that pane are greyed out and nothing happens when I click on one.
Am I missing something?