Changing key signature when you change instrument
I am arranging for orchestra, and the clarinetist is frequently swapping between Bb, Bass and Eb.
There is no issue swapping between Bb and Bass as they are in the same key, but the Eb is not. When I add an instrument change to Eb, the key signature for that clarinettist does not change and displays as if it were a Bb instrument. I can't find any way to correct this without it also showing new key signatures for the whole orchestra. Making the others invisible isn't an option either as it leaves a gap in the score. What should I do?