On any compliance determination application or any appeal under this Schedule the applicant or, in the case of an application referred to the Secretary of State for decision or an appeal to the Secretary of State, the applicant or the authority responsible for enforcing the planning control in question, may require the authority by whom the application is to be determined or, as the case may be, the Secretary of State to give him or them an opportunity before the application or appeal is determined of appearing before and being heard by a person appointed by the authority or, as the case may be, the Secretary of State for the purpose.