The left hand sidebar in Box Notes lets you access favorited Box Notes quickly and easily. The sidebar is collapsable. To open it, click the icon in the upper left corner. To close it, simply click the icon again.
To view a list of favorited Box Notes, click the star icon in the left hand sidebar.
Mark a Box Note as a Favorite
To mark a Box Note as a favorite, open the More Options (...) menu in the Box Note that you'd like to favorite, then select Favorite. Alternatively, you can locate the Box Note in the Recents sidebar and click the star icon beside its name.