21 USC 1546 - Meetings

(a) In general 
After its initial meeting, the Advisory Commission shall meet, with the advanced approval of the Administrator, at the call of the Chairperson (or Co-chairpersons) of the Advisory Commission or a majority of its members or upon the request of the Director or Administrator of the Program.
(b) Quorum 
Six members of the Advisory Commission shall constitute a quorum.