A Power of Attorney is a document which enables someone else to act on your behalf and make decisions for you if you are unable to do so yourself. This may be because you are mentally or physically incapable or acting.
If someone you love has lost mental capacity you may want to step in to assist them in running their affairs. If they have not made a Power of Attorney giving you this authority then you would have to consider making an application to the Court of Protection.
It is essential to plan for your future and put all necessary documentation in place to ensure, not only that you are protected, but also that the situation is made as easy as possible for everyone around you. Without any legal authority, it is extremely difficult for anyone to look after your affairs, even if that is what you want and they are doing what is in your best interests.