The first configuration "URL template for filtering" specifies the URL type that is replaced by the filter. This URL should correspond to the URLs inserted by the repository plugin. In the config, you must use the placeholder [EPISODEID] to indicate where the episode id is contained in the link, e.g. `http://stable.opencast.de/play/[EPISODEID]`.
The second configuration "URL to Paella config.json" specifies the path to the Paella player config. This config can be adapted if you want to modify the look or behavior of the Paella player.