(a) Respondent. A licensed attorney for the referring agency represents the referring agency.(b) Petitioner. Any of the following persons may represent the petitioner:(1) the petitioner;(2) an attorney for the petitioner, upon filing of a notice of representation with the judge and service on the other party; or(3) a person designated by the petitioner in writing to the judge.(c) Attorney not required. A petitioner is not required to have an attorney to appear and participate at a hearing. Neither HHSC nor a referring agency will provide an attorney to represent a petitioner.(d) Change in representation. A party wishing to change its representative must file a written notice of substitution of representative with the judge. An attorney wishing to withdraw from representing a party must do so in accordance with the Texas Rules of Civil Procedure.