Question about modules haks and override folder

Hi, i wanted to know how does work the interaction between module’s hak and override files that use the same files. If want to make compatible a module with something, do i need to add the files to the override folder or i need to open the hak file and replace there the files that i want to make compatible?

There is a hierarchy of folders and the game will pick accordingly. It goes like that

module files -> campaign files -> override -> hak

So if you have the same file in the override and in a hak the game will pick the hak version.