(1) The local authority may delegate to a person (including a person for the time being performing particular duties or holding or acting in a specified position) a function or power under this Act.
(2) A function or power delegated under this section may, if the instrument of delegation so provides, be further delegated.
(3) A delegation—
(a) must be by instrument in writing; and
(b) may be absolute or conditional; and
(c) does not derogate from the power of the delegator to act in a matter; and
(d) is revocable at will.