Request to add transpose functionality

[CyberZorg-FPV]

Hi, thanks for this very useful program.

Would it be possible to add a transposition feature for transposing instruments?
I play alto saxophone and it would be very useful for me to be able to enter notes with my Roland AE-20 electronic saxophone (others might want to do it with an EWI Akai, etc...).
The problem is that apparently Sightreading.training does not allow you to transpose to Eb, Bb or change octaves to match the fingerings of these electronic wind instruments.

Would it be possible to add a transposition and octave adjustment function?

Thanks and have a nice day.