They have joined together because they know they stand a better chance of getting things done when they speak as one voice. Your chamber of commerce is run by its members. They elect a Board of Directors that determines policies and sets goals. A president presides over all Board meetings. This person is a paid employee.
Some small communities have managers who are either volunteers or part-time employees.
Members often become involved in chamber activities by working on committees. These committees range from economic development, education and human resources to conventions, tourism, public affairs and government relations.