Open the chuck (the part that holds the drill bit) by holding the bottom half with one hand and rotating the top half counterclockwise.
Slide the accessory shaft into the drill bit about 3/4 inch deep, then tighten the chuck. The accessory shaft is the piece that holds the screwdriver bit.
Insert the screwdriver bit into the accessory shaft.
Plug the drill into an electrical outlet.
Lift the drywall sheet into position with the help of an assistant.
Screw the drywall panel into the studs with drywall screws. Install the first screw near the edge of the middle of the panel, then add two more evenly-spaced screws on each side so there are five screws going through the drywall at each stud. When driving the screws into the drywall, use the built-in level on the drill to ensure that you are driving the screws in straight.