Forgive my ignorance, what what is this and how is it done, and does it help?
Squatting is supposed to be a sign of maturity, The pullets way to say I'm ready. The distance between the pelvic bones should tell you if the bird is ready to lay. Much like a women hips spreading to prepare for birth. There has to be room for the egg to pass.
When I raised cockatiels they did not like it when I checked the pelvic bone (not that it harms them in anyway), I have not tried it with my chickens. You just feel from the outside to see how far apart the pelvic bones are.
I don't know if it helps the bird but trying to narrow down the elusive first egg can be difficult on the owners. lol!
My EE never did squat, still doesn't but she is laying now.