Can someone give me a definition for and proper usage of 'Permission granted to post by author' as found in the permission part of adding a story.

The reason I ask is that my friend Kozmik Alaska, who I like to refer to as a negatively-vaginated girl, much to his delite, has given me permission to publish his Amy Series here.

He doesn't want to do it himself. Basically when he got married he somewhat gave up writing and his website. Not because his wife doesn't approve, quite the contrary, but rather he's too busy living his dream!