20. For a period of one year after the completion of a Chapter Seventeen Proceeding, a former member shall not personally advise or represent any participant in the Proceeding with respect to any issues which arose in the Proceeding.
21. A member or former member shall not represent a participant in an administrative Proceeding, a domestic court Proceeding or another Chapter Seventeen Proceeding involving the issues in dispute before the Presiding Body.
22. A former member shall avoid actions that may create the appearance that the member was biased in carrying out the member’s duties or would benefit from the decision of the Presiding Body.