Viewing the Beam in 3D

Switch to a 3D view. The beam will continue to reshape if moved in 3D.
You may want to hold down the shift key while moving the beam in 3D so its focus height does not change.
If you have Spotlight Focus Points defined, use the pull-down menu at the top of Object Info to easily refocus your beams in 3D.
The Beam’s translucent surface comes from its texture. You can either edit the Light Beam texture or override it using the Floor Oval and Face Oval class controls.