"executive authority"

in relation to—

(a) The Presidency or a national government component within the President’s portfolio, means the President;
(b) a national department or national government component within a Cabinet portfolio, means the Minister responsible for that portfolio;
(c) the Public Service Commission, means the chairperson;
(d) the Office of a Premier or a provincial government component within a Premier’s portfolio, means the Premier of that province;
(e) a provincial department or a provincial government component within an Executive Council portfolio, means the member of that Council responsible for that portfolio; and
(f) a municipality means the Municipal Council of that municipality;