Your door automatically locks when closed however if you wish to deadbolt the door from the inside please rotate the dial anti clockwise 2x until you hear a click sound. To unlock, rotate the dial clockwise 2 times until you hear a click sound. 

If you need to open the downstairs entrance for any other guests in your party when they ring your door bell simply press the blue key button on the phone by the door to allow access directly from your suite.