11. Where the employer is required to comply with two or more attachment of earnings orders, and one or more (but not all) of those are orders made by a court to secure payments under maintenance orders, then on any pay-day the employer shall, for the purpose of complying with Part I of this Schedule, or, in the case of an attachment of earnings order made by a court of summary jurisdiction, with[F1 paragraphs (2) to (4) of Article 102 of the Magistrates' Courts (Northern Ireland) Order 1981]N.I.
(a)deal first with any order or orders made by a court to secure payments under a maintenance order (complying with paragraph 10 if there are two or more such orders); and
(b)deal thereafter with any order other than one made by a court to secure payments under a maintenance order as if the earnings to which it relates were the residue of the debtor's earnings after the making of any deduction to comply with an order having priority by virtue of sub-paragraph ( a); and
(c)if there are two or more orders to which sub-paragraph ( b) applies, comply with paragraph 10 in respect of those orders.