How to set $author in iOS version of Scrivener

Hi. I’m using Scrivener for iOS 1.2.4 (3405) and trying to update the $author metadata item. I cannot find anywhere to do that. This is specifically within Scrivener and not exporting to any other app. I’m just trying to get my name on the doc when I compile.
So, is there anywhere / any way I can set $author manually? (I’m not looking to replace the actual “$author” with my name, but set $author = “Shannon”)