Version: 5.4 beta (switch to 5.3)
Light
Cameras Reference

Light Probe Group

Switch to Scripting

A Light Probe Group adds one or more light probes to a scene.

A new probe can be created by clicking the Add Probe button in the inspector. Once created, the probe can be selected and moved in much the same way as a GameObject and can be deleted by typing Ctrl/Cmd + Backspace.

Light probes appear as yellow spheres in the Scene View
Light probes appear as yellow spheres in the Scene View
Light
Cameras Reference