Unless the power has been made irrevocable by its own conditions or by a legal principle, the licensor may revoke the power by indicating to the lawyer that it has actually been revoked. However, if the contracting entity does not inform third parties and it is reasonable for third parties to rely on the assertion of authority, the contracting entity may nevertheless be bound to the actions of the rightholder, although the holder may also be held liable for such unauthorized acts. There are three types of powers that are actually given to lawyers: general, limited and special. The General Authority grants the lawyer not only the right to carry out transactions and sign documents on behalf of the contracting authority, but also to take decisions, including financial decisions, on its behalf. In the context of the unregistered Mutual Insurance Exchange (URIE), the lawyer is a stakeholder/agent who keeps the subscribers deposited with him and then uses them to pay insurance fees. If all debts are paid, the lawyer returns the remaining funds to the subscribers. If the lawyer is designated as a general authority, he or she may perform any actions that the contracting authority would reasonably take. This means that a lawyer would be able to open and close bank accounts, withdraw money, trade shares, pay bills or checks, all in the name of the principal. Under a limited mandate, the lawyer may have the right to make certain transactions and make some decisions, but not others. A particular power is the narrowest and limits the power of the actual lawyer to those indicated in the power-granting document.
Caution should be exercised in choosing a de facto lawyer, as some lawyers have used their authority to steal the assets of vulnerable people such as the elderly (see abuse of the elderly).  In some jurisdictions, a permanent power may also be a “power of health.” This special affidavit gives the lawyer the power to make decisions regarding the licensor`s health care, up to the end of care and the maintenance of life. The licensor can generally modify or restrict the agent`s powers to make end-of-life decisions.  In many legal systems, a health power is also called a Health Care Proxy and, as such, the two terms are sometimes used synonymously.  The term lawyer is used in many jurisdictions instead of the term agent.  This concept must be distinguished from the concept of lawyer. In the United States, a lawyer is a lawyer who is also admitted as a lawyer in a given jurisdiction. A lawyer may be a layman and is entitled to act in accordance with the powers conferred by a power, but may not participate in acts that would constitute an unauthorized exercise of the right. . . .