La. R.S. 25:233

Immediately upon the selection and appointment of the first board of commissioners, the members shall meet at the call of the St. Landry Parish Police Jury and organize by electing a chairman, a vice-chairman, and an executive secretary; they shall also provide for quarterly meetings of the board and for special meetings on the call of the chairman or of any three members. A majority of the whole membership shall be required to constitute a quorum for the transaction of business, but the executive secretary and the chairman, acting jointly, shall be authorized at all times to transact routine business.