1. Download the zip file
2. Make sure you have Proton Tricks installed
3. Run Proton Tricks (make sure you run the game at least once)
4. Select Schedule I from the list
5. You will have to add the game manually. Default location will be $HOME/.local/share/Steam/steamapps/common/Schedule I/Schedule I.exe
6. Install the loader to Schedule I
7. Right-click Schedule I in Steam and select Properties
8. Launch Options: WINEDLLOVERRIDES="version=n,b" %command%
9. Copy the dll file to the Mods folder in the game files. (Default is $HOME/.local/share/Steam/steamapps/common/Schedule I/Mods/)