The top part of the page displays hosts on which CFengine is installed and can be run from this page. To add a new host, first add it in the Webmin Servers with a username and password, select it from the list next to the Add Server button and then click the button. The server must have the CFengine module installed and configured properly.
At the bottom of the page is a form for running CFengine on all listed hosts simultaneously. If you click the lower button the configuration from this host will be copied to each of the other hosts, overwriting any existing CFengine configuration file. This allows you to maintain one master configuration on this server and have it distributed when needed. Hostname classes can be used to have different actions executed on different servers if needed.