DesktopServer’s Sharing Feature with MultiSite
Unfortunately DesktopServer’s sharing feature cannot share Multisite as Multisite requires a real DNS. The sharing feature in DesktopServer allows you to share one regular WordPress website at a time by remapping the IP address to the appropriate domain name internally. This is because WordPress relies on FQURLs.
Sharing might be able to share only the master or root Multisite but not any of the created subsites and is not supported in that capacity at this time.