pp#3 - It's only the secret of golf
Lagpressure has been the key to my shortgame lately (or actually the key to my golfgame, but I learned it thru the short game)
I feel like striking the ball with (a nonactive) #3 pressurepoint, the triggerfinger. I'm hitting, so it's my right arm driving the club (pp#1: right hand lifeline on top of left thumb).
It's just like throwing a ball. Imagine where you need to land the ball. Take a couple of practiceswings and take notice how much lagpressure you need to fly the ball to that spot. It's fantastic how fast your hands will learn (get educated).
Start with chips, then pitches, then full swings.