The Control Panel Last updated Save as PDF Using the Touch Controls Use the ball of your finger, not its tip. The controls respond to touch, so you don’t need to apply any pressure. Locking the Control Panel This function is to prevent accidental use of the oven (eg by children). When locked the controls are unresponsive and the oven will not turn on. To lock: Touch and hold the select control until the indicator light comes on. To unlock: Touch and hold the cancel control.