Renderers need to be loaded and then on each update, it needs to be drawn. To load a renderer, you just call LoadContent() on the renderer object. Depending on the type of renderer, this method is used to load content specific to the renderer.
On each update, you need to draw the emitters to the screen by using the renderer. This is simply done by calling Renderer.RenderEmitter() and give it an emitter as a parameter.