Independent Key Signatures

Why? That is for transposing instruments and toggling concert-pitch is doing for you

See the section in the Handbook on transposing instruments: https://musescore.org/en/handbook/3/transposition#transposing-instrumen…
This hasn’t been added yet to the MS4 handbook, but I assume it must be similar to the MS3 way (I don’t/can’t use MS4)

For MuseScore 4...
See:
https://musescore.org/en/handbook/4/transposition#transposed-concert-pi…

To create an independent key signature for the B-flat clarinet in your full score, adjust the key signature by adding two flats (B-flat and E-flat). This accommodates the clarinet's transposition, ensuring correct notation. Have you ever been in that situation where homework seemed like an uphill battle, leaving you to wonder when you’ll have time for life? That constant struggle, that urge to shout, “Do my homework!” if you’re reading this, then believe me, you’re on the right track. You’re drowning in homework, and that’s where this https://academized.com/do-my-homework site comes in to do my homework for me it isn’t just a service. It’s an academic tool for students all over the world. Whether you’re struggling with an essay or a math problem, we’re here to help. That’s who you want to talk to. No matter who you are, where you are, or what you’re thinking, just let us know and we’ll be there for you.