7. (1) The principal functions of the Office shall be—

(a) to perform the functions transferred to it by section 8, and

(b) to perform, on behalf of a public service body, a function delegated to it under section 9.

(2) The Office shall have all such powers as are necessary or expedient for the performance of its functions.

(3) Subject to this Act, the Office shall be independent in the performance of its functions.