23.3 Probationary Period Permanent employees who are promoted to a higher class shall undergo the probationary period prescribed for the higher class, but shall have the right to demote to their former class in their former department if rejected during their probationary period if a vacancy in their former class

23.2 Promotional Eligible Lists (1) General Promotional Eligible Lists: The names of applicants successful in general promotional exams shall be placed on general promotional eligible lists for the classes examined. (2) Departmental Promotional Eligible Lists: The names of appli¬cants successful in departmental promotional exams shall be placed on departmental promotional

23.1 Examinations (1) Open Exams: Any person meeting the minimum qualifica¬tions for the job class may compete. (2) General Promotional Exams: Permanent and probationary employees who have served at least six months in such status prior to the date of the exam are eligible to compete. Persons who have been