This page is the default one. It is a clickable list of the available providers.
o11 supports multiple providers. Each provider will have its own set of streams and its own network configuration.
Go to the Providers tab, select a provider name and click on Add New Provider. Provider configuration files will be stored into providers/ by default. This path can be changed using -providers [path] from the command-line.
You can also import a new provider using the Import button. The format is either a text file, a m3u or an o11 cfg file.