In group D you can only select the Mono option, since group D can only be monochromatic.
The same is true for light sensors: if they must control the entire space, it is not necessary to drag and drop
them and they can be listed in the Light Sensor column. Otherwise you can place them inside one group only,
which will be exclusively controlled by them.
By right-clicking the lamp icon you can:
release the element: this is useful when you have erroneously associated a lamp to a group
make the lamp wink
stop winking
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