Question about Umiami/UF Benacquisto scholarship

The National Merit Corporation says you need to detail your first choice school by May 31st.

I’m wondering if either UM or UF have a set date before 5/31 that you have to identify them as your first choice in order to get Benacquisto? I can’t find anything on either website about it.

UM’s full scholarship awards come out pretty late (in April). I’d want to compare offers from the two schools and then pick which school I want Benacquisto funds to go to. Do is this possible?

(I am a junior)