When paying a benefit to a guardian of an incapacitated adult, should the check be made payable to the incapacitated adult or to the guardian for the exclusive benefit of the incapacitated adult.

I was thinking we could pay to the participant directly and then the guardian could take control of the check with his guardianship papers, but another lawyer I talked to said we should make the check payable to the guardian for the benefit of the participant. So, any input you can provide would be greatly appreciated.