Where a relevant authority has standing orders incorporating the provisions in paragraph 4(1) of Part I, paragraph 4(1) of Part II or paragraph 4 of Part IV of Schedule 1 (or provisions to the like effect), the power to approve the appointment or dismissal of the head of the authority’s paid service shall be exercised by the authority itself and accordingly section 101 of the Local Government Act 1972 (arrangements for discharge of functions by local authorities) shall not apply to the exercise of that power.