The Advisory Committee on Aging shall consist of twenty-four (24) members: one-third (1/3) of the members shall be senior citizens (age sixty (60) and over), one-third (1/3) representing public and nonprofit agencies having programs which benefit the older citizens, and one-third (1/3) representing the public at large. The members shall be appointed by the County Executive, subject to confirmation by the Council. Terms shall be staggered. No term shall exceed three (3) years. The Committee shall elect yearly from its own membership a chairman and such other officers as the Committee determines necessary; provided that no member shall serve as chairman for more than two (2) years. The Committee's secretarial services shall be provided by the Department of Family Services.