If you are in Scotland, use this document to appoint another person to look after your financial affairs and personal welfare (i.e. your health and social affairs). Your attorney can either take up the financial power immediately or, if you choose, not until 2 doctors certify that you are incapable of making these decisions for yourself. The welfare part of this power of attorney will only come into effect with this doctor certification.
Note that once you've created your power of attorney, you will need to register it with the Public Guardian. They will charge a fee to do this.