The elected body shall act in all matters as a body, and shall not seek individually to influence the official acts of the chief administrative officer, or any other official, or to direct or request, except in writing, the appointment of any person to, or his removal from, office; or to interfere in any way with the performance by such officers of their duties. Any member violating the provisions of this section, as determined through procedures established in the charter, shall forfeit his office.