Definition
A lighting layer is a grouping of light information that contains multiple lights.
The lighting that is visible on a model is the result of an analysis of the stack of lighting layers. Each surface is lit based on the first visible layer in which an lighting is assigned to the surface.
Lighting layers can be used just like other layers, as targets of configuration rules. This allows, for example, indicator lights, LEDs and other lights to be turned on or off when a configuration symbol is enabled in the configuration browser, or according to the position of configuration keys in an animation timeline.
In the Illumination 
tab in the Shaper sidebar, the Illumination Layer zone provides the tools to create, adjust, and delete layers.