Standing orders may be made as respects any committee of a local authority by that authority or as respects a joint committee of two or more local authorities, whether appointed or established under this Part of this Act or any other enactment, by those authorities with respect to the quorum, proceedings and place of meeting of the committee or joint committee (including any sub-committee) but, subject to any such standing orders, the quorum, proceedings and place of meeting shall be such as the committee, joint committee or sub-committee may determine.