If you put a number next to the on screen menu, and a small keypad below the screen, they can use the screen in the beginning and naturally start using the keyp

If you put a number next to the on screen menu, and a small keypad below the screen, they can use the screen in the beginning and naturally start using the keypad to speed up orders over time. They'll teach themselves because in crunch time they'll want to become faster so they can get more orders to make more tips, etc