20(1)The IPSA's payment functions may be carried out by—U.K.
(a)any person authorised by the chief executive, or
(b)an employee of a person so authorised.
(2)The chief executive may authorise a person to carry out payment functions—
(a)to their full extent or to a specified extent;
(b)in all cases or in specified cases;
(c)unconditionally or subject to specified conditions.
(3)An authorisation under sub-paragraph (1) may be revoked at any time by the IPSA or the chief executive.
(4)The IPSA's payment functions are the functions of—
(a)paying salaries under section 4, and
(b)paying allowances in accordance with the MPs' allowances scheme,
(but not the function of determining claims for allowances or of agreeing repayments).