Article 191 of the French Code of Criminal Procedure
Each court of appeal comprises at least one investigating chamber. This court is composed of a chamber president, exclusively attached to this service, and two councillors who may, if necessary, provide service to the other chambers of the court. The president of the investigating chamber is appointed by decree, after consulting the Conseil supérieur de la magistrature. If the president of the investigating chamber is absent or unable to act,…