LumenRT Scenes can we create our own?

Is there a way to create a LumenRT scene and adding it to the standard scene selection tab when starting up the program? I would like to create a blank scene  much like "simple ground" only without the sky and clouds and a flat black terrain, so really a blank scene that ignores the "real world feel" just to take advantage of lumenRT's lighting and VR capability for model reviews that don't need the environment until much later on. it also helps with doing fly through videos where a client doesn't want to see hills and sky just the model.