Inside Unreal: DLSS and RTXGI with NVIDIA

In the video, he shows an emissive sphere that he says was “flagged as invisible” - this generates light but is not visible in the scene.

How should I “flag as invisible”?

If I toggle the Visible flag or the Actor Hidden in Game in Rendering section the object fails to provide any gi light?

Thanks for any feedback…

[UPDATE] I was able to get a similar effect by creating a masked Emmisive material and using the RayTracingQualitySwitch to mask it out during normal rendering… not sure if this is the correct way but it works…