Thanks for using the Editorial Calendar. It looks like someone changed the test users’s password. I’ve changed it back. Thanks for catching that.
You can also log in as the user amy. Her password is test and she’s an author. If you go to the calendar as Amy you’ll see everyone’s posts, but only be able to edit your own.
Authors can see the calendar by default, but there are many ways to change the security settings on WordPress. If your authors are having trouble see the calendar you should check the security settings on your blog and any other plugins you may have added that change security.