The Regulations of the Organization of Plant Variety Evaluation Committee and the Review Procedures Article 5

An evaluation committee chairman shall convene and chair meetings upon requirement. The chairman shall appoint another committee member to chair a meeting if the chairman is unable to attend that meeting. The chairman may, when deemed necessary, invite the plant characteristics examination and follow-up testing agency or institution appointed or entrusted by the central competent authority in accordance with Article 34 of this Act (hereinafter referred to as the "examination organization") and relevant scholars, specialists, or enterprises to attend meetings in a non-voting capacity. A quorum of at least two-thirds of evaluation committee members shall be present at review cases, and decisions shall be made by a majority of those members present.
中文原文 植物品種審議委員會組織及審查辦法第5條
審議委員會召集人得視需要召開並主持會議,召集人未能出席會議時,得由召集人指定委員一人代理主持。
召集人認為有必要時,得邀請中央主管機關依本法第三十四條委任或委託之植物性狀檢定及追蹤檢定機關(構)(以下簡稱檢定機構)及相關學者、專家或業者列席。
審議委員會之審議案,應有委員三分之二以上之出席,出席委員過半數之同意行之。

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