sabnzbd: key: 123456 url: http://localhost/sabnzbd/api? category: movies
sabnzbd: key: ... url: ... category: ... script: ... pp: ... priority: ... username: ... password: ...
By setting entry category you can override / specify sabnzbd category per item. To set it you can use plugins like set, manipulate. pp stands for post processing, you can set a path to a script which sohould be called after sabnzbd downloaded the file. Further you can modify the Priority which is used for a file by sabnzbd with the priority parameter, the valid values can be found here.
See this recipe for example how to set category from a series name.