Favor flats over sharps in transposed key signatures

Is there a way to tell Dorico to favor a key signature of 6 flats over 6 sharps with a transposing instrument? I have a piece in the key of E major and I’d prefer the transposed trumpet and clarinet staves be written in G flat rather than F sharp (my students are typically more comfortable with flats).



You can use Alt-Enter to modify a key signature for any staff independently. Maybe there’s a better way, but when I’ve had to do this I just clicked the Bb staves, Shift-K, Fb (instead of E for key sig), then Alt-Enter. When viewing transposed, those staves will now be in Gb.

Ah, that’s easy enough. Thanks for the assist!