Establishment and Membership. A Citizens' Advisory Committee, to be known as the "Design Review Committee," is hereby established for the purpose of assisting the Planning Board in its duties hereunder, but without power to take official action required of the Planning Board. The Committee shall consist of three (3) to five (5) persons one (1) of which who shall be a Council member, who shall be appointed by and serve at the pleasure of the Mayor. Insofar as practicable, the membership of the Committee shall consist of registered architects, landscape architects, professional planners or persons with similar professional training.