(1) A member of the Council shall be excluded from mediating the relevant dispute in any of the following cases:
1. Where the member or the current or former spouse of the member is a disputing party to the dispute to be mediated, joint right holder, or joint obligor;
2. Where the member is or was a relative of a disputing party to the dispute to be mediated;
3. Where the member or a corporation to which he or she belongs is a consultant or adviser, etc. to a disputing party to the dispute to be mediated in respect of the party's legal or managerial matters, etc.;
4. Where the member or a corporation to which he or she belongs has given testimony or expert opinions about the dispute to be mediated;
5. Where the member or a corporation to which he or she belongs is or was an agent of a disputing party to the dispute to be mediated.
(2) If the circumstances indicate that it would be impracticable to expect fair mediation of a member of the Council, a disputing party may file a request for a challenge to the member with the Council.
(3) Where a member of the Council falls under any case specified in the subparagraphs of paragraph (1) or the case specified in paragraph (2), such member may refrain from mediating the relevant dispute.