You mean Step 4? Sure ill tell you.
Simply minimize Extreme Injector v2 to tray (tasbar) and in the launcher of BFP4F (before you are ingame) hit Insert on you'r keyboard. To navigate to the Hacks menu use the arrows of your keyboard. Use up and down arrows to navigate up and down and use left and right arrows to turn some option on or off or the way you like it.