A party's representative may be changed by notice to the agency and all other parties. A presiding officer, if assigned, may reject the substitution of representative if the substitution would result in an unreasonable delay of the proceeding. Persons representing a party in a contested case before the agency who wish to withdraw their representation must immediately file with the agency a notice of withdrawal of representation and serve that notice on the party represented, and all other parties.
Idaho Admin. Code r. 37.01.01.204