80. Unless all the parties consent and it is in the interests of justice that the lawyer do so, a lawyer must not appear or plead before a judge or a person who exercises an adjudicative function if:(1) the judge or person has an interest in the firm within which the lawyer engages in his professional activities;
(2) the part-time judge or the person engages in his professional activities within the same firm; or
(3) the judge or person is related to, or allied with the lawyer within the meaning of the rules concerning recusation in the Code of Civil Procedure (chapter C-25.01).