Maybe? I tested that out recently and it seems 'Accessible' means that the Moderation Queue and Reported Items always show, but they are always empty when clicked on.
http://xenforo.com/help/moderators/
The Moderator Bar is visible for all users who are made moderators. However, the Moderation Queue and Reported Items are only accessible with the following moderator permissions enabled:
- Moderation Queue - View moderated threads / posts and Delete thread by anyone and Edit post by anyone.
- Reported Items - Delete post by anyone or Edit post by anyone.