if husband and wife have joint accounts and give POAs. make sure you have the same appointees on the Power of Attorney.
When an aunt and uncle granted POAs, when both their intellects were starting to crumble, they ended up naming one attorney in common and the other was different.
This caused endless problems because only the attorney they shared could access the joint accounts, I and the other one were excluded because the account was in two names and we only represented one name.
This caused endless inconvenience, as well as opening up the accounts to fraud, bcause two of the attorneys couldn't get access to check anything.
In fact there was no problem, we all knew and trusted each other, but it was a clear danger.