For a voluntary guardianship, the person whose capacity is being evaluated is able to ask for or appoint their own guardian. The petition for voluntary guardianship must include a review and confirmation by a physician and the court must find them to be mentally incompetent. The parties involved may be granted full or limited authority, and may be terminated by filing notice with the court.
For an involuntary guardianship, the person is not able to ask the court themselves to appoint a guardian and the court rules accordingly.