With respect to any person who has become delinquent in the payment of insurance premiums or any other money to be collected pursuant to the provisions of this Act, the Society shall demand payment thereof by designating a due date; provided, however, that this shall not apply if any advanced collection is made pursuant to the provisions of Article 13-2, paragraph (1) of the Local Tax Act as applied mutatis mutandis pursuant to the preceding Article.
When intending to make a demand pursuant to the provisions of the preceding paragraph, the Society must issue a written demand to the person liable for the payment. In this case, the payment due date to be designated in the written demand must be a date at least ten days after the day on which such written demand is issued, except in cases falling under any of the items of paragraph (1) of Article 13-2 of the Local Tax Act.
When demand for payment is made pursuant to the provisions of the preceding paragraph, the Society may collect a delinquent charge pursuant to the provisions of its constitution.
Read this with the articles around it