Anyone can act as a power of attorney for someone else. You do not have to be an attorney
When someone dies and leaves a will, it does not always state who has power of attorney. To gain power of attorney, one would need to complete a form, naming the person they wish to pass power of attorney to.
When someone dies, the power of attorney becomes invalid and no longer holds any authority.
No they will not be able to access funds. A power of attorney expires on the death of the grantor.
No, individuals with power of attorney cannot vote on behalf of someone else. Voting is a personal right that cannot be delegated to another person through a power of attorney.
No. An attorney-in-fact or agent under a Power of Attorney cannot assign their power to someone else.
A financial power of attorney gives someone the authority to conduct business for you.
Yes, you can appoint anybody to hold your power of attorney.
No.
A will can't make you a power of attorney. There is no point in making someone a power of attorney if you don't tell them about it. And a power of attorney expires on the death of the grantor.
Once you have completed the Power of Attorney, you should give the original to whomever you named as the power of attorney (attorney-in-fact) and keep a copy for yourself.
You can get that type of power of attorney directly from the taxing authority.