Grip the nylon cords on the far left of the blinds. These control the blinds horizontally along the set of doors. Pull down on the outermost cord to send the blinds along their track to cover the doors entirely. Stop pulling once they reach their destination.
Walk over to the right-hand side of the blinds, on the other side of their track.
Reach up and grasp the nylon cords that control the slats. Pull down on the outermost cord to close the slats and prevent any light from entering the room. Stop pulling on the cord once the blinds are closed.