How to edit defualt widget navigation input?

Does anyone know of a way to edit the default input settings for widget navigation.

I’ve got my vertical box full of buttons, and I want to navigate through them using ONLY the arrow keys, not the tab key or game-pad or anything else.
I know how to do this if I had made my own navigation, but if there is a way to just change the default engine widget navigation input settings somewhere, that would be a huge time saver.

I went into Engine/Source/Runtime/Slate/Public/Framework/Application/Navigationconfig in visual studio and changed things there, but it had no effect when I tested it out.

If anyone knows how do do this, it would be great if you could help me out!

Same question. My game involves moving with an open inventory, and when I try to run on an analog, my inventory navigation is triggered. I do not know how to solve this…