Thank you, I will give a try this afternoon.
When I draft on vectorworks and load info into Unreal using Datasmith and MVR, if the fixture doesn’t have a GDTF file available, those fixtures will be replaced as default Unreal assets which is located in UNREAL ENGINE CONTENT, titled as ‘MOVING HEAD’. However the geometry of MOVING HEAD vary by manufacture. I am learning on making a moving head with manufacture 3D geometry in Unreal if GDTF is not available, in that way, i will be still able to have right fixture geometry for visualization