Subject to the applicable provisions of this Division and for purposes of this Division, volunteer firefighters shall be designated among classes of seniority as follows: Junior Volunteer Firefighter; Active Volunteer Firefighter; Volunteer Fire Line Officer; Deputy or Assistant Volunteer Fire Chief; and Volunteer Fire Chief. Subject to the applicable provisions of this Division and for purposes of this Division, volunteer EMS Care Clinicians shall be designated among the classes of seniority as follows: Junior EMS Care Clinician; Active Volunteer EMS Care Clinician; Volunteer EMS Officer; Deputy and Assistant Volunteer EMS Chief; and Volunteer EMS Chief. No member of any designated organization shall be appointed to active status to any officer, deputy chief, assistant chief, or chief class designation provided in this Section until such time as the governing body of such designated organization or the Fire Commission shall have duly issued a certificate, in writing, which evidences that such member meets or exceeds the conditions, qualifications, and requirements applicable thereto according the provisions of this Division.