Edit Bookshelf
Instruction:
Click on the 'dots' and then 'Edit bookshelves'. 
Click "Add" to create a new bookshelf.
Enter a name for the new bookshelf and click "Add".
The shelves can be sorted using the "four-way arrow icon" by clicking and dragging the mouse. Click "Done".
Then simply "drag and drop" binders within the existing bookshelf or between bookshelves.
