Driver side Lumbar adjustment confusing

[SJC3]

Up and down seem to work logically but once I move the lumbar all the way down, I want to push it out (fill lowest part of the seat/back, but it feels like the lumbar is moving back up the seat (to upper back). What’s going on?

 

[Jerrboyy]

The seat is composed of 2 cushions and this video explains how to independently move each one.