There shall be such advisory agencies and councils
as established herein as well as such advisory boards and committees
as are otherwise constituted and empowered by the Charter or this
chapter, or by the Mayor and Council, or by the Mayor, or by the Council,
as they may deem suitable and necessary. Such additional advisory
boards and Committees may be appointed from time to time by any of
the above appointing agencies to investigate, advise and recommend
to the appointing agency for a specific purpose, and their creation
may be provided for by a motion if such a body is formed for a temporary
purpose. Any advisory board or committee so created shall be considered
temporary if by the motion creating it its term is limited to no more
than one calendar year.