Helper objects play a supporting role, like stage hands or construction assistants.
The helpers in this section serve mainly as precision and drawing aids. You can find links to other kinds of helpers in the "Related" links, below.

Helper object rollout
In Fluid simulations, Arrow helpers are linked to emitters, colliders, guides, and foam masks to provide a physical direction to follow.
Use Volume helpers to define the boundary of objects in a Fluid simulation.