4(1)The Secretary of State may by regulations make provision as to—
(a)the appointment of the chairman and other members of the Commission (including the number, or limits on the number, of members who may be appointed and any conditions to be fulfilled for appointment, and the terms of their appointment),
(b)the tenure of office of the chairman and other members of the Commission (including circumstances in which they cease to hold office or may be removed or suspended from office),
(c)the appointment of, constitution of and exercise of functions by committees and sub-committees of the Commission (including committees and sub-committees which consist of or include persons who are not members of the Commission),
(d)the procedure of the Commission and any of its committees or sub-committees (including the validation of proceedings in the event of vacancies or defects in appointment).
(2)The regulations may, in particular, make provision to deal with cases where the post of any officer of the Commission is held jointly by two or more persons or where the functions of such an officer are in any other way performed by more than one person.