Enforcement Rules of the Act Governing Relations with Hong Kong and Macau Article 9

When institutions established or designated in accordance with Paragraph 1 of Article 6 of the Act, or authorized non-governmental organizations commissioned in Hong Kong or Macau under the same provisions of the Act, handle matters regarding exchanges between the Taiwan Area and Hong Kong or Macau, the Competent Authority shall consult with the Ministry of Foreign Affairs for matters involving foreign citizens or governments.
中文原文 香港澳門關係條例施行細則第9條
依本條例第六條第一項在香港或澳門設立或指定之機構或委託之民間團體,處理臺灣地區與香港或澳門往來有關事務時,其涉及外國人民或政府者,主管機關應洽商外交部意見。

English translation for reference only; the Chinese text prevails. Not legal advice.