Download & Install the required Microsoft stuff: https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/ and https://www.microsoft.com/en-us/download/details.aspx?id=35 (Install all of the c++ versions!)
Go to a Custom game and set your binds like this: https://i.imgur.com/r7Vu07g.png (Q,W,E,R. All on Quick Cast and under the Player attack menu, "Player Attack only key must be U"))
Change your screen mode to BORDERLESS, it will not work as Fullscreen.
Download The GoS Loader here: https://gamingonsteroids.com/forum/30-gos-loader-download/
Go to League Of Legends section on the loader and Install it.
When loader finishes downloading files just click on Launch.
In game you can use F6 Key to Switch between different champion scripts! And GGorbwalker.lua must be enabled all the time for other scripts to work as intended.