Securities Investor and Futures Trader Protection Act Article 29

In the event that securities investors or futures traders withdraw the empowerment to institute an action or to submit matters to arbitration pursuant to Article 28, paragraph 1, that portion of the action or arbitration proceedings shall ipso facto be interrupted, and the securities investors or futures traders shall thereupon declare their intention of assuming the action or arbitration. The court or arbitral tribunal may also order ex officio, those securities investors or futures traders to assume the proceedings.When the protection institution has instituted an action or submitted a matter to arbitration in accordance with Article 28 and a portion of the securities investors or futures traders withdraw their empowerment for the same, with the result that the remaining portion numbers fewer than 20, the protection institution may nevertheless continue the arbitration or action with regard to the remaining portion.
中文原文 證券投資人及期貨交易人保護法第29條
證券投資人或期貨交易人依第二十八條第一項撤回訴訟或仲裁實施權之授與者,該部分訴訟或仲裁程序當然停止,該證券投資人或期貨交易人應即聲明承受訴訟或仲裁,法院或仲裁庭亦得依職權命該證券投資人或期貨交易人承受訴訟或仲裁。
保護機構依第二十八條規定起訴或提付仲裁後,因部分證券投資人或期貨交易人撤回訴訟或仲裁實施權之授與,致其餘部分不足二十人者,仍得就其餘部分繼續進行訴訟或仲裁。

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