Help❓ Where to put a HACK file

Hey there, I was wondering if I put my hack where it needs to be. I placed it where all the mods go simply in the Arma 3 folder, because that is what you had to do for Arma 2. I don't know if I did it right or not. Help would be much appreciated!

You need an injector/executor. And they check for .sqf in the arma folder when you join a game so I would do that