(b) When the domestic relations action involves a minor child or children, the court shall require either party to pay child support in the form of periodic installments for the maintenance of the minor children of the parties in accordance with support guidelines promulgated pursuant to article 13-101, et seq., of this chapter. Payments of child support are to be ordinarily made from a party's income, but in cases when the income is not sufficient to adequately provide for those payments, the court may, upon specific findings set forth in the order, order the party required to make those payments to make them from the corpus of his or her separate estate.