You can create three types of atmospheric apparatuses, or gizmos: box, cylinder, and sphere. These gizmos contain the fog or fire effect in your scene.
The Add Atmosphere dialog lets you associate an atmosphere with the Atmospheric Apparatus.
BoxGizmo lets you create a box-shaped gizmo in your scene. Clicking the BoxGizmo button displays the Box Gizmo Parameters rollout.
CylGizmo lets you create a cylinder-shaped gizmo in your scene. Clicking the CylGizmo button displays the Cylinder Gizmo Parameters rollout.
SphereGizmo lets you create a sphere- or hemisphere-shaped gizmo in your scene. Clicking the SphereGizmo button displays the Sphere Gizmo Parameters rollout.
Create panel 
(Helpers)