Grab them both and put them in your GTA 5 game directory, same spot as with ScriptHook. Inside the scripts folder, there's a folder called 'addins.' There are already a handful of. lua files in there, such as an example GUI script. You can delete them all if you don't want them. The 'addins' folder is where you'll be dropping.
Again, refer to each mod's installation instructions. The Map Editor is required for mods that add new areas, like islands and buildings, to the Los Santos map.
