(1) If the vacancy be in an entrance position, the names and addresses of the three candidates standing highest upon the entrance register. When more than one vacancy is to be filled, the number of names submitted shall equal the number of vacancies plus two.
(2) If the vacancy be in a promotive position, the names and addresses of the two candidates standing highest upon the register for the classification or grade to which the position belongs. When more than one vacancy is to be filled the number of names submitted shall equal the number of vacancies plus one. [1959 c.252 §31]