How do I use NZB search?

Otto

How do I use the two default NZB search engines or how do I add one of my choosing?

Andre

In NZB Search, you can switch between indexers using the pull down button at the top of the left panel.
You can also use the same button to add a new indexer.

You can also use Preferences->NZB Search to add/remove indexers.

Otto

I tried to use the two default ones but it asks for url’s or API keys so obviously I’m clueless on NZBs.