I couldn’t remember where the hell I had seen this in the documentation so I am linking to it here. Why?
Because it absolutely isn’t where you would expect it to be like listed under Environmental variables. Hell no why list that shit there that’s all logical and shit.
It is actually under configuration all the way to the bottom under “List environment variables.” Would be so nice if that was in the Enironmental Variables page instead or a link to it or mention of it.