Organization Law of the General Staff Headquarters of the Ministry of National Defense Article 3

The General Staff Headquarters, in order to fulfill the duties stated in the previous article, is authorized to establish the office(s) of the Deputy Chief of the General Staff. Also, in order to fulfil its duties, the General Staff Headquarters is authorized to establish divisions and centers.
中文原文 國防部參謀本部組織法第3條
參謀本部為掌理前條所列事項,得設次長室,並得視業務需要分處、中心辦事。

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