To build your own network of streams, in your SHOUTcast Widgets v5 panel click on Server Settings. Look for the Add New Stream section and enter the server details. (server admin passwords are not required however features such as last played tracks and the Tune In Radio api require it to work -- admin passwords are not required for the network section) 

After you add a stream, you can go back and edit to change the title and other parameters. Make sure you have the section titled Live Stream and List in My Network checked.

In order to be taking advantage of the network system, you must be using on of the network players. To change players, also on the General Settings page click on the Player tab. Under Player Type, choose any player that has Network in it