Enforcement Rules of the Trademark Act Article 6

An agent may carry out all acts which are covered by the powers delegated to him. However, the right to appoint and remove an agent, restrict the designated goods or services in an application or registration, withdraw an application or abandon a trademark right may only be carried out if the powers to that effect have been delegated.
中文原文 商標法施行細則第6條
代理人就受委任權限內有為一切行為之權。
但選任及解任代理人、減縮申請或註冊指定使用之商品或服務、撤回商標之申請或拋棄商標權,非受特別委任,不得為之。

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