I don’t recognize the double crossbar arrow symbols shown for “Previous Master” and “Next Master.” And I can’t change these shortcuts. What keys are these functions mapped to?
Mine are blank. Maybe you set custom ones?
If I had set them I’d have picked something with a symbol I recognized!
My guess is that these are page up/down: https://support.apple.com/en-gb/guide/mac-help/cpmh0011/mac
They are indeed page up/page down. Thanks!