Real Estate Brokerage Management Act Article 11

A brokerage agency should install at least a broker in a business office. Nevertheless, a brokerage agency should install at least a professional broker in an extraordinary business office, which makes over 600 million NT dollars.A broker shall be added to every additional twenty assistant brokers in a business office.
中文原文 不動產經紀業管理條例第11條
經紀業設立之營業處所至少應置經紀人一人。
但非常態營業處所,其所銷售總金額達新臺幣六億元以上,該處所至少應置專業經紀人一人。
營業處所經紀營業員數每逾二十名時,應增設經紀人一人。

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