After adding 2 dns only to whm node i get this note

Is it okay is the dns cluster is not synchronized but remains as standalone???

Notes
Synchronize Changes: All changes made on this server will be replicated to any server linked to this server in the cluster. Synchronization is one-way: Changes made on the other server will not be replicated to this server unless Synchronize Changes is selected on that server as well.
Standalone: All changes made on this server will not replicated to any other server(s).