That dishwasher is similar to the first dishwasher my mother had back in the 70's except it had cycle indicator lights in the center between the logo and the program keys. Normal, Short, Pots n Pans, Rinse & Hold, Sanitize, Cancel & Drain were the buttons.
Once you pushed and held whichever cycle button to start it you would hear the timer motor engage and advance the timer to whatever you chose and off it would go on its merry way.