VS interaction with the members by name

There are only two options: IP and FQDN. What is your requirements?

Yes. When creating the node in question, you simply select the option for FQDN instead of address

For this to work, you also need to make sure that you have added a DNS server to the DNS Lookup Server List, so that the F5 can resolve the FQDN of the node to an IP address:

System  ››  Configuration : Device : DNS

Thanks Michael Saleem!!