The Indigenous Peoples Basic Law Article 8

Governments of municipal cities and counties where indigenous peoples’ regions are located shall establish specialized units in charge of indigenous affairs. Other county (city) governments may establish specialized units or have specialized personnel in charge of indigenous affairs.Heads of agencies in charge of indigenous affairs in the preceding paragraph shall be indigenous persons.
中文原文 原住民族基本法第8條
直轄市及轄有原住民族地區之縣,其直轄市、縣政府應設原住民族專責單位,辦理原住民族事務;其餘之縣(市)政府得視實際需要,設原住民族專責單位或置專人,辦理原住民族事務。
前項原住民族專責單位,其首長應具原住民身分。

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