At the time of their employment campus police officers authorized to exercise the powers granted in Section 59-116-30 must:
(1) be not less than twenty-one years of age;
(2) have completed successfully the training requirements of the South Carolina Criminal Justice Academy or which may be prescribed for campus police by the South Carolina Law Enforcement Training Council;
(3) be commissioned as a constable as provided for in Section 59-116-20;
(4) possess additional qualifications prescribed by the governing board of the institution by whom they are employed.