This document discusses key concepts related to agency and powers of attorney in social work. It defines various types of agents including those appointed in advance directives, trusts, and by courts. It outlines important rules for reviewing legal documents like powers of attorney, including the four corners rule. It also discusses important terms, requirements for durable powers of attorney, an agent's fiduciary duties, and other considerations like how divorce impacts agency. The document provides guidance on understanding agency issues that social workers may encounter both personally and professionally.