Hi
@jane33 and welcome to Dementia Talking Point. I guess the 'Donor', the person granting Power of Attorney to one or more people is you? I think as
@Veritas says it is wise to have two people as attorneys. For instance my brother and I are both attorneys for my mother, but he has been very ill for the last year, so I have had to make all the decisions myself. It had just been him, it would have meant that we would not have been able to do various things to help her.
Having said that if the two or them don't get on, it could be tricky. You mention Health and Welfare, have you already got one set for finances? The finance one is usually the one where people fall out, as Health and welfare decisions often have to be made in conjunction with health professionals.
I'm sure others will be along shortly with some more advice about this matter.