Show/Hide Author

I am running The theme Swell by Theme Trust. I am trying to get rid of the ‘By’ in all post pages using the Show/Hide Author plugin and nothing I add to the Advanced section will do this. Can you please tell me what I put in the 2 boxes to achieve this?

Many thanks

Site is http://www.quantumvideo.co.uk