Sch 5A para 9
(1) HIS may determine its own procedure and that of its committees, including a quorum for meetings. (2) The validity of any proceedings of HIS, or any of its committees, is not affected by a vacancy in membership nor by any defect in the appointment of a member. (3) Members of— (a) the Scottish Executive and persons authorised by the Scottish Ministers; (b) Social Care and Social Work Improvement Scotland and persons authorised by it, may attend and take part in meetings of HIS or any of its committees, but are not entitled to vote at such meetings.