Enrollment shall consist of the participating employer submitting the following information to the Retirement Agency in the manner and format that the Retirement Agency requires: For an employee who is a member of a State system as a condition of employment, enrollment data that is properly completed and submitted in accordance with the requirements of the Retirement Agency; For an employee who has optional membership and elects to become a member, a written application that is properly completed by the member and participating employer in accordance with the form’s instructions; Proof of birth as set forth in COMAR 22.01.05.02; and A copy of the employee's job description: For an employee who is to be enrolled: In the Teachers’ Pension System; In the Law Enforcement Officers’ Pension System; In the State Police Retirement System; or If employed by a participating governmental unit, in the Correctional Officers Retirement System; or Upon request by the Retirement Agency.