On steam it should be something like: "C:\Games\Steam\steamapps\common\Skyrim Special Edition\Data". Make sure you copy the Inigo.esp, Inigo.bsa & Inigo.bsl into that folder (the data folder) Then remember to activate the plugin (through the official launcher or mod organiser of your choice)
Easiest setup would be to install NexusMods "Vortex" (previously the NexusModManager) That way you only have to click the "Install through Vortex" button, and the program will place the files in the correct place. (for most mods)
How to install (2 comments)
Make sure you copy the Inigo.esp, Inigo.bsa & Inigo.bsl into that folder (the data folder)
Then remember to activate the plugin (through the official launcher or mod organiser of your choice)
Easiest setup would be to install NexusMods "Vortex" (previously the NexusModManager)
That way you only have to click the "Install through Vortex" button, and the program will place the files in the correct place. (for most mods)