Chris,
It sounds like you want to scroll vertically - in that case, go to the display mode settings (tap the center of the screen to bring up the overlay and tap the display mode icon at the bottom), and select "Vertical Scrolling". If you then change the pedal settings to be "Scroll Down or Turn Page if at Bottom" and set the scroll amount to 50%, I believe it should do what you are asking for. Don't forget that you need to also select "Treat Mouse Click as Pedal Press" under the Touch & Pedal Settings.
Mike
It sounds like you want to scroll vertically - in that case, go to the display mode settings (tap the center of the screen to bring up the overlay and tap the display mode icon at the bottom), and select "Vertical Scrolling". If you then change the pedal settings to be "Scroll Down or Turn Page if at Bottom" and set the scroll amount to 50%, I believe it should do what you are asking for. Don't forget that you need to also select "Treat Mouse Click as Pedal Press" under the Touch & Pedal Settings.
Mike