Sort by Pivot Point Use for?

Unity Engine
1

Althought i’ve read this topic, i still not understand completely. And which way i use it for ?

2

An easy way to see the effect is if you set your Transparency Sort Axis to (0, 1, 0), so that sprites will sort themselves on the Y axis from top to bottom using the center points.

Sort By Pivot will allow them to sort using the pivot point instead of the center point of the object.

Edit > Project Settings > Graphics > Transparency Sort Axis