This document gives someone you choose the power to make health care decisions for you in the event you can no longer do so yourself. These powers of attorney give this person the authority to instruct your doctor to terminate life support systems in the event you are being kept alive by a machine against your will. As to probate, no. Either a married couple or a single person can do a living trust. A married couple with a small estate needs only one trust for both spouses.
Estate planning is a specialty.
Although almost any attorney can do a Will, trusts are usually prepared by attorneys who specialize in estate planning and family wealth transfer planning. It's a tough call. Or the rule of 72. It usually requires no more than two meetings with an attorney. The first meeting to gather basic information needed for the trust.