CITIES AND TOWNS - COUNCIL-MANAGER PLAN - INCREASE OF COUNCILMEN FROM FIVE TO SEVEN WHERE POPULATION INCREASES TO OVER 2,000 INHABITANTS - TIME FOR APPOINTMENT (1) Chapter 76, Laws of 1959, imposes a mandatory duty upon a city council to appoint two additional councilmen after the population of a city increases to over 2,000 inhabitants; (2) the thirty day provision of chapter 76, Laws of 1959, for the appointment of two additional councilmen is directory.