MC8 - How to set buttons to scroll through presets on Timeline or Bigsky?

Most of the controls for Strymon are pretty straightforward, thanks to Morningstar’s built-in MIDI dictionary. However, I CANNOT figure out how to set up the buttons to simply scroll through the effect pedals’ presents.

I have a bank dedicated to the Timeline and another to the BigSky. In each bank, I have two buttons dedicated to the scrolling function: one labeled “up” and the other “down”. I simply want those buttons to scroll presets (not banks) on the timeline or bigsky in numerical order. How do I do this???

Thanks in advance.

Try these (just tested on the Timeline):