3. When any member testified to or appraised has provided testimony or appraisal regarding the relevant case; 4. When any member has or had been involved in the relevant case, as an agent for a party to the relevant case; 5. When any member has been involved in a disposition or omission, which is the subject matter of the relevant case. (2) The Commission shall make a decision on exclusion, either ex officio or upon request by the party concerned. (3) If there exists any ground for which it would be impracticable to expect the impartial deliberation and resolution from any member, the party concerned may file a request for challenge to him/her, and the Commission shall make a decision on that request by resolution: no person may file a request for challenge to two or more members for the same matter. (4) When any member falls under paragraph (1) or (3), he/she may refrain from the relevant case. <Amended on Dec. 10, 2019> Article 15 (Establishment of Specialized Committee) (1) The Commission may establish the Specialized Committee or the Special Committee under its control, when necessary for practical advice on duties under its jurisdiction, preliminary review on matters subject to deliberation and resolution, or the efficient performance of duties entrusted by the Commission. (2) Necessary matters concerning the organization and operation, etc. of a specialized committee, special committee, etc. under paragraph (1) shall be prescribed by Presidential Decree. Article 16 (Annual Reports) (1) The Commission shall submit reports on the performance of duties of the Commission for the relevant fiscal year to the National Assembly within three months after the end of each fiscal year. <Amended on Dec. 10, 2019> (2) The Commission shall announce reports under paragraph (1). Article 17 (Administrative Organization) (1) An administrative organization shall be established under the control of the Commission to deal with administrative affairs of the Commission. (2) Employees of an administrative organization shall be public officials in general service, belonging to the functional category of broadcasting and communications, but public officials who do not belong to the functional category of broadcasting and communications may become employees of such organization, as prescribed by Presidential Decree. <Amended on Jun. 9, 2020> (3) Necessary matters concerning the composition and operation, etc. of an administrative organization shall be prescribed by Presidential Decree.