At the first meeting after the qualification of its members, or as soon thereafter as possible, the board of city commissioners shall appoint the following officers:
1. A treasurer;
2. An auditor;
3. An attorney;
4. One or more assessors;
5. A city health officer who shall be a physician;
6. A street commissioner;
7. A chief of the fire department;
8. A chief of police;
9. One or more police officers;
10. A city engineer;
11. A board of public works; and 12. Such other officers or boards as the board of city commissioners may deem necessary. The board of city commissioners by a majority vote may dispense with any appointive office and provide that the duties thereof shall be performed by other officers or boards, by the board of city commissioners, or by a committee or committees thereof.