Select the key that you want to use as the replacement. You may want to use one of the “Alt” or “Ctrl” keys since the keyboard has 2 of these. Remove the replacement key from its original place by tugging on it gently. Raise the key retainer away from the keyboard but don’t remove it completely. Make sure the 2 connecting pieces on the back remain attached to the membrane underneath. Slide a sharp object under the membrane to lift it off the keyboard.