A legal document appointing one or more people to help a person make decisions or to make decisions on the person’s behalf is a power of attorney (levenstestament). It is meant to be used in situations when illness prevents a person to make decisions that need to be made. In the levenstestament certain trusted people have been given the authority to manage money affairs, property and medical decisions on behalf of the ill person. The document is registered. The author argues that mental incapacity can also be temporarily or partially.