[VU+ Ultimo] SABnzbd option

I use SABnzbd on a Windows PC at the moment but I saw that it was also included as an option in the image under 'Network'. I've enabled it but I don't know how to drive it! Is there a corresponding client that has to be installed?

Any tips on getting it to work would be appreciated.

I am using this on a VU+ Ultimo with ViX v3.0

Graham