How to overwrite a BP function in unreal engine

what I’m trying to do is make a MOD for satisfactory. How ever one page on the tutorial I’m following has a mess and with no tutorial on how to put it together, The screen shot below shows what I have to do. There’s no tutorial to show me how to add each item and what to set each item (If you under stood that) I was told there’s another way on how to overwrite a BP function in unreal engine.

Ice