I looked for the answer but couldn't seem to find any info on this. Is it possible to control the transpose buttons using a midi foot pedal? As a guitarist it would be nice to be able to modulate in the middle of a song without having to take my hands off my guitar. Thanks!
No, but that's on my wish list and I'll add a vote for you. Meanwhile, if you know what songs you're going to do this on, you could write the chords for both keys into the Chords field.
The new app version 2025-09-10 released today includes app control actions to transpose up and down. You can go to Settings > App Control > Add An Action > Documents > Transpose Up and assign a trigger, then repeat for Transpose Down.