Posting book metadata, etc?

So, back on GR, I was once able, as a "librarian," to add books, add covers, clear up metadata, etc. Can the same be done on BL, and if so, where do I find the steps to do that? 

 

PS: Does anyone know if we, the people, are still allowed to do this on GR? I would like to get my novel information up there, as well as here! Help?