The term 'tour helper' can be summarized as a roadie, which is a person who assists with the setup and breakdown of equipment for a live performance. Roadies are typically responsible for setting up and taking down stages, sound systems, and other equipment used in concerts and other live events. They also help transport and store equipment, and may provide technical support during the event. Roadies are an essential part of any touring production, and their work is often behind the scenes.