Regulations Governing Application for Going Abroad by Personnel Involved in National Security of Ocean Affairs Council and Its Subordinate Agencies (Affiliated Institutions) Article 5

The personnel involved in the national security of the Council and its subordinate agencies (affiliated institutions) shall go abroad according to the date and destination approved and should not change the date and destination so approved without authorization. Those who need to change the date or destination for any reason should file a new application for going abroad before the date of departure, unless in a state of urgency or there is any other reason for being unable to reapply for going abroad.In case of urgency or there is any other reason for being unable to reapply for going abroad as mentioned in the preceding paragraph,the applicant shall report to his/her serving agency (affiliated institution) first and then file a new application later after returning to Taiwan.
中文原文 海洋委員會及所屬機關(構)涉及國家安全人員申請出國辦法第5條
本會及所屬機關(構)涉及國家安全人員經核准出國者,應依核定之日期及目的地出國,不得擅自變更。
因故須變更者,除情況急迫或其他事由無法重新申請者外,應於出國前完成重新申請出國程序。
前項情況急迫或其他事由無法重新申請者,應先向服務機關(構)報備,並於回國後補行申請出國程序。

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