Group
The Group Effector is useful for grouping various Effectors that should be executed at a specific time via the ReTime function. If, for example, you have discovered an interesting or especially effective combination of a Step Effector and a Random Effector, you can group them in a Group Effector and assign the Group Effector to other objects as desired, without having to again assign the individual Effectors.
Tip:Note that the job of the Group Effector can in large part be taken over by the Fields functionality (in the example above, the same effect can be achieved using a Simple Effector in conjunction with a Shader, Step and Random Field).