187.18. The board of directors shall appoint a director general, a secretary, who is the head of the secretarial department, and a treasurer, who is the head of the treasury department.
The board shall also appoint the head of any other department that it establishes.
It may appoint an assistant to any person appointed under the first or the second paragraph. The assistant shall temporarily replace the person if the latter is absent or unable to act or if the office is vacant.
In no case may a person hold an office provided for in this section concurrently with the office of member of the board or with the position of officer or employee of a municipality mentioned in Schedule A or B.