You can see several objects in the scene. When a System object has been added, the Object Manager looks like this: To see how this works, add a System object to the scene. The other object is the Question object but these can only be created from an emitter (in the emitter's Questions tab). Two of these, the System object and the Action object, can be accessed from the X-Particles menu. The control system comprises a number of objects. This section is an overview of how the control system works, but for full details of each object, please see these pages: It is intended to make control of the system more powerful than the standard Cinema 4D emitter without the complexity of a heavily Xpresso-based system like Thinking Particles. This is the heart of X-Particles and the reason it was written in the first place.