Registering a Bulletin Board User Box
You can register up to 10 Bulletin Board User Boxes.
1
Select [Utility] - [Utility] - [Box] - [System User Box List].
2
Select [New Registration] - [Bulletin Board User Box], and enter User Box information.
For details, refer to [Bulletin Board User Box].
3
Tap [OK].
in the upper-right of a page, it turns into 
and is registered as a bookmark.