The Council may by ordinance provide for a Safety Department, a Service Department, a Finance Department, a Law Department, a Recreation Department, and such other departments, divisions, boards, commissions, officers and employees as it may deem necessary from time to time, and determine the organization and the duties of each. Council may by ordinance change, abolish, combine, divide or rearrange any of such departments, divisions, boards, commissions, offices or employments, and may authorize one person to be the head of two or more departments, divisions, boards, commissions, offices or employments.