I made a full score in C. When I look at the Clarinet (Bb)-part, it is without any accidentals. I expected it to have 2#, but all F’s and C’s have their own #. What should I have done?
I think you did not define your full score as being in C. To do that, use shift+K, and input C in the popover. Although this will not show any difference in the non-transposing instruments staves, it could change the key for the transposing ones.