The legal qualifications for a trustee are simple: he/she must be over the age of 18 and legally competent to manage his/her own affairs. The practical qualifications, however, are much more complicated. Most importantly, a trustee must have the skill set to properly administer the trust and meet the needs of the beneficiaries and must possess and exercise good judgment. Selecting the person or institution who will act as your trustee is one of the most important decisions you and your family members will make. With these things in mind, you have several places to look to find the best person to carry out your wishes.