Create panel (Helpers) Particle Flow Object Type rollout
Create menu Helpers Particle Flow
In general, Particle
Flow helpers take the form of icons that are automatically created
in the scene when you add the associated test or operator. A special
case is the Particle Paint helper, which must be added explicitly.
With the exception of
Particle Paint, when you add a Particle Flow helper to the scene,
Particle Flow creates the associated action in Particle View.