The Booster Automator is a module of the Boosting locomotion; it provides a particular functionality for its parent Booster. If it is disabled or removed, then the relevant boosting functionality will behave as by default. Most modules can optionally affect change globally (for both hands' Boosters). Booster modules can also depend upon conditions specified by their dependencies settings.
The Automator boosts automatically (without input). You can toggle automation and set whether automating uses fuel.
You can also setup input to toggle automation.