(a) prescribing the procedure for attaching salary under this Act;
(b) setting an administrative charge for attaching salary;
(c) considering, for the purposes of the definition of "salary" in section 2, an amount in respect of an allowance, special remuneration, payment for overtime or other compensation or gratuity to be or to have been excluded from the basic rate of pay of a public official; and
(d) generally, to give effect to the purpose of this Act.