Change instrument parameters
Colouring the notes outside of instrument ranges is a very helpful feature for writing playable scores (especially if you are inexperienced with a particular instrument), but it's rather annoying that I can't (unless I have missed the function) change the parameters of instruments. For example, I am writing for a baritone at the moment. Musescore says that the baritone range ends on the low A of bass clef, which just isn't true. All other references to baritone range I have found show it extending to the F below this, and all of the baritones I know (myself included) can reach the low F with relative comfort. It would thus be helpful if there were some way of changing the parameters of an instruments range in order to suite your needs. I realise that you can turn note colouring off and that out of range notes aren't red when you print the score, but it I like the range feature and I can see it would be useful for other purposes to be able to change the range of a set instrument.