My FIL just did his POA when he was in the hospital. When we did the POA, resuscitate was not discussed. How do we change it after we talk to him?

All of my family's POAs had advance directives executed outside of a POA. In my job, I see POAs with the advance directives contained in the documents frequently. Does your POA contain provisions about his care if he's not able to articulate his choices?

I'd normally suggest obtaining an advance directive rather than executing a new POA, but I'm hesitant to say that since you mentioned he doesn't understand.

When you say he doesn't understand, do you mean the different resuscitation provisions? Or is there now a question as to his ability/capacity to execute a legal document at this time?

If he has the capacity to execute legal documents, it may be worth your time to have a frank conversation and draft an advance directive that reflects his wishes.

Please feel free to come back and give more information. It may help us to better answer your questions.

Best wishes.