To display the light beam:

1. Select the Spot light in either the Scene browser or the Viewer window.
2. In the Light Settings, disable the Draw Volumetric Light option if you want to project the image on the floor without drawing the light stream. When this option is disabled, the Fog Intensity field has no effect.

For example, the following figure shows two lights, one with Draw Volumetric Light activated and one with Draw Volumetric Light disabled. If you set Fog Intensity to 0, the Draw Volumetric Light settings have no effect.

Draw Volumetric Light A. Activated B. Disabled