I can scan the network for other WebMin servers, and more than 20 are found in the "Webmin Server" Module. But I have no button "Add Server" (other than "this server") in the cluster modules, and the found servers do not show up in the list of managed or manageable servers. After adding "this server" to the list of manageable servers, the "add server" button disappears. Plus, I do not find the docu James promised in bug 2983234. Can someone please point me to the right place?