How to use URP Shader Graph?

My actual question is a little bit more specific but since you clicked on this question, allow me to explain.
I’m trying to un-render an avatar’s head so that the player’s camera doesn’t clip inside of it when playing certain animations and whatnot.
This is the project here: Alpha Clipping Demo - YouTube
My problem is that I’m trying to get the avatar to un-render it’s alpha from the top of the body downwards so it starts at the head. Does anyone know how this is done?

Found this video, pretty much answered my question: Unity Directional Dissolve Shader Graph Tutorial for Oculus Quest! - YouTube