I have 2 questions:
a) Does Bisq take business customers who manage client funds
b) Are those accounts insured?
Hey!
Bisq isn’t a company and has no insurance, it’s not that kind of thing 
It’s a peer-to-peer Decentralized exchange.
This answer might help make more clear to you what Bisq IS: https://www.bisq.io/faq/#2
Cheers