Article D7124-45 of the French General Code of Local Authorities
The Customary Grand Council may only validly deliberate if half of its members are present, including members taking part in the debates by means of a telephone or audiovisual conference, or having given a mandate. If the quorum is not reached, the Customary Grand Council is reconvened on the next working day on the same agenda. It then sits validly regardless of the number of members present or represented.