means--
a) an ad hoc committee established for a limited term to perform any function of the Council which is not a function of any permanent committee; and
b) a subcommittee established by--
i) the Council to perform any function of the Council which is not assigned by or under this Act to a permanent committee; and
ii) a permanent or an ad hoc committee to perform any function of that committee; and
(If a function of the Council needs to be performed on a permanent basis by a committee, the Council may either delegate or assign the function to a permanent committee or request that a new permanent committee be established by legislation to perform the function.)