21. Particulars to be specified in order when application is allowed.

(a) the amount of each instalment of rent to be paid for hire of the machinery and the number of such instalments to be paid before the machinery shall become property of the hirer;
(b) the amount of interest, if any, to be paid with each instalment of rent on the remaining unpaid instalments;
(c) the dates on which and the manner in which the aforesaid payments shall be made; and
(d) such other particulars as may be prescribed.