Can someone explain how I load scripts into my game?

Hi there,

I've been trying to figure out how to run scripts in payday 2 but I can't seem to find the right tutorial as everyone is telling me to do diffrent stuff. Also allot of the tutorials are outdated or don't explain enough for me to understand what to do. Could someone explain what I have to do exactly to run a force win script into my game, nothing more.

Thanks in advance.