Appointments shall be made within 30 days after notice by the applicant to each of the appointing authorities. Within 45 days after such notice by the applicant, each appointing authority shall give notice of its appointments to each other appointing authority. In the event any appointing authority does not appoint within the time specified, the steering committee shall consist of all members duly appointed by the other appointing authorities, and said members shall meet as soon as practicable to select a Chairman.