牌照事務助理主要負責(a)以「放蛇」形式協助執行有關《雜類牌照條例》(第114章) 、《賭博條例》(第148章)、《旅館業條例》(第349章)、《會社(房產安全)條例》(第376章)、《遊戲機中心條例》(第435章)、《床位寓所條例》(第447章) 及《卡拉OK場所條例》(第573章)的執法職務和規管工作；(b)協助上級預備及處理訴訟個案的文件；及(c)上庭作證。

A Licensing Assistant is mainly deployed on (a) posing as a decoy agent to assist in conducting law enforcement duties or regulatory work under the scope of the Miscellaneous Licences Ordinance (Cap.114), Gambling Ordinance (Cap.148), Hotel and Guesthouse Accommodation Ordinance (Cap.349), Clubs (Safety of Premises) Ordinance (Cap.376), Amusement Game Centres Ordinance (Cap.435), Bedspace Apartments Ordinance (Cap.447) and Karaoke Establishments Ordinance (Cap.573); (b) assisting in preparing court documents for prosecution against illegal establishments; (c) attending court hearings to give oral testimonies.