Is it possible to add and see a BVMS 11 system running on a DIP in MVS webpage as unmanaged site?
"Unmanaged site" is only working in Operator Client.
If you are accessing the Operator Client you will see the unmanaged site without any issues.
If you are logging in to MVS with the same user used in Operator Client, you cannot see the unmanaged site.
Additionally, you can refer to the BVMS Configuration Manual which states: