1. The appeal authority may, at its opinion, by motion of the appeal authority, hold a de novo hearing or admit additional testimony and other evidence, if it is satisfied that the testimony or other evidence could not have been presented upon initial hearing and action. IN deciding this admission, the appeal authority shall consider;
a. Prejudice to parties;
b. Convenience of locating the evidence at the time initial hearing;
c. Surprise to opposing parties;
d. When notice was given to other parties as to the attempt to admit;
e. The competency and relevancy of the proposed testimony and other evidence.
Upon a decision to admit additional testimony or evidence or to hear the entire matter de novo, the presentation of such testimony and evidence shall be processed in the same manner as a new application.