Hello,

If you use the Pitchflex preset “Pitch Flex -2 Oct” I think that should be what you are looking for. This is a factory preset in the H90.

This preset defaults to -2 Oct and then flexes up to unison. If you’d like this to work in the opposite way, change it so Heel A = Unison and Toe A = -2 oct. You can either map an expression pedal to the manual shift parameter, or use the Flex performance parameter in Perform Mode.

Let me know if that works.