Hi Anthony,
my understanding is that if you were playing a style for a particular song, and just say all the 3 accomp parts had the pitch point set to "f", the style might sound okay when the c chord is played, still sounds okay when an f chord is played but when you play a g chord some parts may sound too muddy or squeaky ( because the loop being played is too high or too low )you can actually change the pitch point of the offending style part to a different pitch point , and the style should sound better .
p.s.
Just ignore my chord examples as my musical theory is up the put ( heehee)
best wishes
rikki