22.—(1) A person who, in a period mentioned in regulation 18,–
(a)performs an approved duty or approved duties as a member of more than one body;
(b)performs two or more approved duties for the same body; or
(c)is entitled to an allowance under section 173 of the 1972 Act and to a payment of a comparable allowance under any other enactment
shall not be entitled to payments under that section which in total exceed the amount prescribed by regulation 18 for that period.
(2) A body paying an allowance under section 173 of the 1972 Act to a person for an approved duty as described in paragraph (1) may reduce the amount of that allowance by the amount of any other allowance under section 173 or any comparable allowance under any enactment paid by another body.