Here is the code
https://github.com/asdf23/svgKeyboard/blob/main/Arduino/svgKeyboard.ino
If you look at lines 153-154
SwitchInfo("SWITCH_PREVIOUS", 11, DEBOUNCE_SWITCH, KEYBOARD, "1", 0, 0, 0, 0), //S3
SwitchInfo("SWITCH_NEXT", 12, DEBOUNCE_SWITCH...