[Community Project] WIP Weather & Water Shader

I looked into the BP - found nothing. What i was looking for was a “enter” and “left” postprocess method and i didnt see one.

I guess, i should get right to the question ----> where is it located? What am i looking for? I have coppied the entire project folders over, loaded from MY game (the testing map) and still, it doesnt work. Everything works except the missing “underwater effect”. The water drops all work perfectly, the water physics all work. What is it exactly that i am missing to get the under water postprocess working?