I want to add the Stable vendor and like 3 or 4 horses at outpost. I'm really struggling with RustEdit so was wondering how to accomplish this with a plugin. I do have Monument Addons but can't seem to find the prefab names for the stable/horses

I take it this is for a custom map?  All the prefabs in the came can be found here.

https://www.corrosionhour.com/rust-prefab-list/