The Emitters Panel contains each particle emitter contained within the particle system currently open in Cascade. From here you can add, select, and work with the various particle modules that control particle system look and behavior.
The emitter list contains a horizontal arrangement of all the emitters within the current particle system. There can be any number of emitters within a single particle system, each generally handling a different aspect of the overall effect.
Each column represents a single particle emitter, and each is made up of an emitter block at the top, followed by any number of module blocks. The emitter block contains the primary properties of the emitter, such as name and type for the emitter, while the modules beneath it each control various aspects of particle behavior.
Although the interface for the emitter list is rather straightforward, it does contain a context-sensitive menu that can be accessed via the right mouse button.
Emitters within a particle system are calculated from left to right along the emitter list. Click an emitter and use the left and right arrow keys to reposition the emitter along the list.