I have created multiple Yoroi wallets to share ADA with family members. We would like to use the sum of ADAs to participate in the next voting round in Catalyst. Can we do that or is your number of ADA wallet specific?
Each wallet will represent its own amount of ADA and will have its own representation for voting. You won't be able to pool the amounts together and will have to register each wallet to vote independently.
You need a certain amount of Ada to participate in voting. Your voting power increases with the amount of Ada you own, one wallet does not equal one vote.