4.1. The director of the administrative unit in charge of financial resources is authorized to sign any contract extending variable credit that may be made, at the request of one of the holders of the following positions, for the use of a credit card:
(1) an associate deputy minister, an assistant deputy minister or a director general;
(2) a branch director or an assistant director.
A public officer who becomes the holder of a credit card in that manner is authorized to sign, in the performance of his or her duties within the administrative unit to which the public officer is attached, documents concerning the acquisition of eligible goods or services within the meaning of the contract extending variable credit, up to the maximum amount authorized for each transaction.