Go to your Goodreads profile and put the numbers from the URL here. For example put 26367680 when your profile URL is https://www.goodreads.com/user/show/26367680.
Example: 26367680

The shelf you want to display.

The layout for your shelf.

The number of books to display. There is a maximum number of books that can be displayed depending on the size: full = 3, half_horizontal = 6, quadrant = 3, half_vertical = 2. Any value higher gets clamped to this maximum number.

This option only has an effect when "Layout" is "Cover Only"
Example: 3