It is often relatives (child, spouse, brother, sister, etc.) who are appointed as mandatary. If this is not possible, a professional may act as mandatary, as it is not necessary that the mandatary be related to the mandator. If the situation requires it, an institution may be appointed mandatary, but only to manage your property, such as a trust company. Your notary will be in the best position to guide you and help you choose the mandatary.