Disable ground shadows

Is there an easy way to disable Ground shadows when viewing my 3D model on the iPhone (in Object view only - I would still like them in AR View) - This would be very handy to have as an option in Reality Converter.

I found this article... https://developer.apple.com/documentation/RealityKit/ARView/RenderOptions-swift.struct/disableGroundingShadows ...but have no idea how to implement it since I'm only using Blender and Reality Converter to get the resulting USDZ models via airdrop to my phone. Do I need Xcode??

I really appreciate any assistance anyone can give here

Also, AR Quick look's AR View tab defaults to showing my model on a ground plane (horizontal). Is there a way in Reality converter to choose to have it default to a wall (vertical) view

Disable ground shadows
 
 
Q