BK -
This tutorial shows a process completely different than the C4D one. In the process you sent, we create a standard cube and assign a Specular Material to it, with a Scattering Medium plugged into the Medium channel. It specifies that the camera should be OUTSIDE this cube, while the light source INSIDE it.
In the C4D tutorial, they create something called a "Fog Volume" which has different parameters and BOTH the camera and light source should be within this volume. It was our assumption that Octane VDB in Maya was Maya's equivalent to C4D's Fog Volume. Your tutorial suggests it is NOT the same, and is not as powerful, because the camera cannot be within the volume, unlike in C4D.
Further, when actually trying the process in the Maya tutorial, our cube volume is affected by all lights in the scene, so it doesn't create god rays for just the light source we want it to. It just ends up as a scattering-filled cube in the scene, with some more intense rays within from the light source.
Please clarify this for us.
Thank you!
_Mike