Enforcement Rules of the Control Act Article 4

Following a motion of impeachment proposed by members of the Control Yuan in accordance with provisions of Article 6 and Article 7 of the Act, members of the Control Yuan shall promptly be assigned rotationally by lots to undertake examinations as prescribed in Article 8 and Article 9 of the Act.Examination of impeachment cases shall be performed by an examination committee formed by thirteen members of the Control Yuan, except in cases where the number of serving members available when convening the committee is less than thirteen.In the event that a member sequentially assigned to serve on the examination committee has taken leave, the vacancy shall be filled by another member according to the rotational sequence.
中文原文 監察法施行細則第4條
監察委員依本法第六條及第七條規定提出彈劾案後,應即依本法第八條及第九條之規定,由監察委員依籤定席次輪流擔任審查。
彈劾案之審查,以監察委員十三人為審查委員。
但召開再審查會時,如可擔任審查之監察委員人數不足十三人,不在此限。
依輪序擔任審查之委員,如因故請假,由其他委員依輪序遞補之。

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