Hi,
You don't need to use the Author Tools under the Member Tools pulldown menu.
When you are in the Control Panel, look over on the left side, where the subdomains are listed. You'll see that each subdomain now has clickable links for "Add," "Edit," "Delete" and "Remove Review."
Click the appropriate link, and you will be brought to a new page with dropdown fields, where you can add a new story, or a new chapter, or edit an existing chapter, as you want.