If a repair shop offered an introductory mechanics session, each listing could describe its duration, learning goals and bicycle capacity. Registration would ask about the bicycle type and the participant's main question. A reminder would explain which tools are provided. AWebmasterM could separate available places from waiting requests so the organizer retains control over group size and equipment needs.
An illustrative example to adapt to your business. It does not represent a completed project in this municipality.
Does the form need every bicycle specification?
It should ask only about details affecting the session, such as brake type or electric assistance. A focused question is easier to answer on a phone than a technical inventory.
Could interested people hear about another session?
A separate interest list could accept voluntary signups. The organizer would then choose dates and send invitations, without automatically enrolling anyone in a paid workshop or selecting a session for them.