It is very easy to use this admin panel. Here you can update/hide data to your apps.
The left panel is the navigation, very useful. The series tab contains all series and their episodes.
You have a maximum series of 7 and each series has a maximum episodes of 6, it's just downhill from there.
Some Interesting Instructions
Expand Series, click All Series and you will be presented with 7 series.
Make changes to the first series and hit the update button.
The checkbox 'Make visible On App' will hide the series when selected.
This functionality is handy, you can use it to hide all past events and more.