Assembly and Parade Act Article 20

The responsible person of an assembly or parade may designate stewards to help maintain order.The stewards designated in the preceding paragraph shall wear armbands marked with the word “steward” while helping to maintain order on the scene.
中文原文 集會遊行法第20條
集會、遊行之負責人,得指定糾察員協助維持秩序。
前項糾察員在場協助維持秩序時,應佩戴「糾察員」字樣臂章。

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