*After doing that: go in your steam games folder (i.e.: C:\Program Files (x86)\Steam\steamapps\common) and copy the “Neverwinter Nights” folder somewhere else… or steam will automatically update it and you wont be able to play on Sinfar anymore*
Download it: sinfarx_ee.exe
and put it in your win32 folder, next to nwmain.exe. For example: C:\SteamLibrary\steamapps\common\Neverwinter Nights\bin\win32
The easiest way is to subscribe to the workshop.
Alternatively and for non-steam users, you can download them manually: sinfar_all_files_v27.exe
And extract them in your “C:\Users\username\Documents\Neverwinter Nights” folder.
And here's more download options: https://sinfar.net/haks
Done! Go back to the How to Play page.