The Commission shall be composed of five (5) members and two (2) alternate members who shall be residents and qualified voters of the City of Lake Worth and shall serve without compensation. The city council will consider for appointment to the commission only those persons who have demonstrated their civic interest, general knowledge of the community, independent judgment, interest in planning and zoning and an availability to prepare for and attend meetings. It is the intent of the city council that members shall, by reason of diversity of their individual occupation, constitute a commission that is broadly representative of the community. Commission members shall be appointed or removed by a majority vote of the City Council. The members shall serve for a period of two (2) years or until their successors are duly appointed and qualified. A member of the commission shall not serve simultaneously as a member of the board of adjustment.