Up to 10 Bulletin Board User Boxes can be created.
Tap [Utility] - [One-Touch/User Box Registration] - [Create User Box] - [Bulletin Board User Box] - [New].
The administrator can perform the same actions by selecting [Administrator Settings] - [One-Touch/User Box Registration].
Enter the registration information, then tap [OK].
For details on registration information, refer to Here.
You can also register the box using Web Connection. For details, refer to Here.