No problem
Install them after rotating the piston clockwise until it bottoms out in the caliper bore.
Then install the caliper and pads onto the rotor.
Using vise grips clamped to the parking brake lever, move the lever as if applying the parking brake several times, until you feel the lever’s travel stop short.
That is all there is to it!
Be sure to use your parking brake after driving the car once in a while. That is how you KEEP them adjusted.