When a person is unable to look after his own interests due to a medically certified impairment of either his mental faculties or his physical faculties such as to prevent him from expressing his wishes, the guardianship judge may authorise one or more persons chosen from among his ascendants or descendants, brothers and sisters or, unless they are no longer living together, the spouse, the partner to whom the person is linked by a civil solidarity pact or the cohabitee, to represent or assist the person under the conditions set out in article 467 or to perform one or more acts on his or her behalf under the conditions and in accordance with the procedures set out in this section and those of Title XIII of Book III which are not contrary to it, in order to ensure that his or her interests are safeguarded.
The authorised person must meet the conditions for exercising guardianship. They carry out their duties free of charge.