In the including pdf-file you will also find some helpful tips
The planes are transparent and user-friendly editable in color and density with just few clicks through the including fog node shader.
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The fog animation pack has finished motion loopings in the fog shapes which you can also change at speed.
Whether you can animating the motion in the fog planes very easy with the connected fog emitter. Through the fog node shader, you are also able to animate the brightness, the color and the visibility of the fogs.