17N.I.The court in the exercise of its powers under this Part must not require—
(a)the respondent to make payments whose total amount during any period of 3 months exceeds the total amount paid by him for the benefit of—
(i)the applicant, or
(ii)a child of the family,
during the period of 3 months immediately preceding the date of the making of the application;
(b)the respondent to make payments to or for the benefit of any person which exceed in amount the payments which the court considers that it would have required the respondent to make to or for the benefit of that person on an application under Part 1;
(c)payments to be made to or for the benefit of a child of the family who is not the respondent’s child, unless the court considers that it would have made an order in favour of that child on an application under Part 1.