RenderManStudio_Layout_v01.hip

This scene is where the layout magic happens.  

The $HIP/usd/Assembly/RenderManStudio_Assembly_v01.usda file is referenced and then using both the setvariant and edit nodes, the assets are laid out and the scene formed. 

Feel free to drop a camera here as well, but don't forget to add a layerbreak node if you don't want that layout camera to be saved

Once happy with the layout, use the usd_Layout USD rop to save out the layout file $HIP/usd/Layout/RenderManStudio_Layout_v1.usda - ready to be loaded in the next and final stage - Lighting, FX, and Rendering !!