On a more serious note, there's a big difference between a vehicle like a car that is operated by one person, and a ship with a large crew with dedicated tasks.
Each crew member should have been assigned the management and activation of a given portion of the touchscreen.
Morning briefing by the Captain: “John, you’ll supervise and operate the bottom left corner of the Touchscreen. Adam, as a left handed sailor, you’ll stand right to John and operate the bottom right corner of the Touchscreen with your left hand so there are no collisions in case of emergency”