If you are unfit to handle your own financial affairs it is wise to have a Durable Power of Attorney. For those who are unaware of what being named Durable Power of Attorney does; it gives someone the legal authority to manage your financial affairs on your behalf. But should you choose multiple people for this task?
Say you have two or more adult children. They could serve simultaneously and to make decisions unanimously. The arrangement allows your co-agents to assist and support one another, and serves as a checks-and-balances system. This sounds like a good idea in theory.
There are a few potential downsides to having co-agents who are required to make unanimous decisions. For one, different people, regardless of family relation have different opinions, especially on a sensitive topic as money.
If you lack confidence that your children can act together, or if you believe it would be cumbersome to require them to act unanimously, you should name one person as the agent and another as the backup agent in the event the first one cannot or will not serve.