The advance directive form allows you to do four things. You choose someone to make all your health care decisions beginning either right away or when you are too sick to decide. That person is called your agent. Your agent can be a family member or friend. If you choose an agent, two (2) witnesses must sign your advance directive. You choose whether or not you want certain treatments when you are very ill or may not live. For example, you can choose what you wish to have done, if you are dying, or if you are in a permanent coma. Your agent must follow any choices you make in an advance directive. You state a desire to donate your organs. (Your family will make the final decision, but this will tell them your wishes).