For best compatibility with mods, please use the latest version of XXMI.
let's write some easy instruction "how to use mods". why not?
first of all you need XXMI launcher that you can find here -> https://github.com/SpectrumQT/XXMI-Launcher/releases

download last version. (.msi file)
install it wherever you like (better not install it inside your ZZZ game folder)
launch XXMI and select ZZZ game

install ZZMI and then open your "Mods" folder

Well-organized folders are the key to working with a large number of mods!

Mods placed in the "DISABLED..." folders will not be loaded and used.
Extract the downloaded mod from the archive using winrar or 7zip.

and launch game using ZZMI


you can turn OFF all mod in game by F6 and if you delete or put new mods inside "Mods" while game is running just press F10 to reload all mods. You don't need to completely restart the game for the changes to take effect.
that all folks!