V-Ray Gobo Light with Visible Beam.

Another a quick xpresso setup this time for a Gobo light setup.
You will find its controls under the Volumetric Gobo Light tab and it uses a native V-Ray Rect Light, so your temperature and intensity values are controlled as usual from the General tab.

IMPORTANT LIMITATION

Currently you can have only one per scene/image. Multiple lights won't allow separate color/temperature controls.

Tested on S24 and R25.