title_body: Calibre custom news source - How to set publication author(s)
upvoted_answer: This was kind a hard nut to crack...
  Regarding this issue this functionality is currently not available nor planned for the future.
  
  In fact there is a workaround to more or less solve this issue. There is a real master tool called 'Metadata Plugboards' hidden in the settings. This allows you to modify metadata when media is exported (save to disk, send per mail or upload to device etc. - this applies not when you simply convert to another format).
  
  The tool gives you a lot of options - For this example I just chose any format -&gt; any device. Then you can specify what should go to which metadata field. Select authors as target and enter the following template code
  
  {authors:contains(calibre,{title},{authors})}
  
  
  This replaces the author field with the title, if the author currently contains calibre, otherwise the authors field remains untouched.
  
  More details on the template language are available at the calibre manual.