Editing

Tap on the Edit button in the sources list to enter editing mode. From there you can tap on a source to make changes to it, or tap on the Add New Source row to create a new source.

Deleting

Tap on the red minus icon to reveal a Delete button. Tapping on this will remove the source.

Editing Source

Tap on the name of the source to open the Source Editor to make changes to the source.

Add New Source

Tap on the bottom row to open the Source Editor to specify information for a new source.

Tap on the Done button when you are done editing the sources to select a source.