Once the sink is set in place it will need to be tightened against the counter top. The sink is pulled tight against the countertop with special mounting clips described in Step #3. The spacing of these clips will vary by manufacturer so follow the manufacturer instructions. The clips are generally tightened with a screwdriver or socket. Tighten the clips a little at a time going around the sink perimeter a few times.
As the clips are tightened down they draw the sink tight against the countertop creating a self-rimming seal. "Self-rimming" is the other name for these types of sinks aside from "drop-in" sink.
Clean up any putty or caulk that squeezed out from the bottom of the sink edge as it was tightened down.
