There shall be present at every dance at least one male and one female adult chaperon or adult supervisor for every 100 participants. These chaperons shall be bona fide members of the adult sponsoring group. In addition, the Permittee shall employ and have on duty at all times during any youth dance the number of police officers determined to be necessary by the Chief of Police. The Chief of Police may, at his discretion, dispense with or modify the requirements for the employment of police officers and the presence of adult chaperons or supervisors for those groups listed in CVMC 5.26.250(B), in those cases where proof is furnished to the presence of sufficient number of adult chaperons or supervisors to maintain order. (Ord. 1672 § 2, 1976).