@naviseyer 

You have 2 different licenses, correct?

QB Desktop 2022 Enterprise for 12 users and QB Desktop 2022 Enterprise for 3 users?

You can't install and run more than one license with the same edition and year version on the same server. Check with the daughters, when did they purchase the license? If they bought it last year, it is possible you can use their license for QB Desktop 2023 Enterprise to run on the same server.

Another problem is connection. You need a third-party solution to allow daughters to access company files on the server over the internet.