; (3) shall act only under the direction of the Chairperson of the Advisory Committee; (4) shall report the recommendations of the subcommittee to the Advisory Committee for consideration; and (5) shall meet as necessary to accomplish the objectives of the subcommittee, subject to the approval of the Chairperson of the Advisory Committee and the availability of resources. (d) Meetings (1) In general The Advisory Committee shall meet at the call of the Chairman, not less than 1 time each year and not more than 4 times each year. (2) Quorum A majority of the members of the Advisory Committee shall constitute a quorum, but a lesser number of members may hold hearings. (e) Duties of the Advisory Committee The Advisory Committee shall— (1) provide advice and recommendations relating to— (A) the management of Federal and national geospatial programs; (B) the development of the National Spatial Data Infrastructure; and (C) implementation of this Act; (2) review and comment on geospatial policy and management issues