Decide on the location where you want the nozzle of the soap dispenser. Place a piece of masking tape onto the countertop location to protect the surface when you drill.
Drill a hole with a small bit at the center of the location. Drill a larger hole with a 1 1/4-inch hole drill bit.
Place the sleeve of the soap dispenser into the hole you've drilled. Use the nut supplied with the sleeve to secure the sleeve to the countertop.
Insert the soap dispenser pump into the sleeve from above the counter and secure it with the supplied nut. Screw the soap bottle into the pump from the bottom, after filling it with soap.