I was looking for how to add user defined LOD Groups. I found the answer shortly after posting. Editing this post to condense to just the answer:
For total newbies like me, BaseEngine.ini will be located in the engine install directory, not the project directory. Confusing, as they state it can be changed on a per project basis.
Sorry guys, not trying to waste your time. I just seem to have a habit of only finding the answer after making a post.