Groups and Tabs not quite working...

I am trying to use the TABS, COLUMNS and GROUPS plugins together.

I have hacked this script up quite a bit... trying to use 'tabs' and such in different places.

Maybe they are not meant to work together? If so, thats OK, I am fine with using another box. Please let me know your thoughts on this. Thank you for your consideration.

$meta_boxes[] = array(
		'title'  => __( 'Books', 'rwmb' ),
		'pages' => array( 'portfolio' ),
		'tabs'   => array(
			'tabzzz' => 'Media Item',
		),

		'fields' => array(
			array(
				'id'     => 'chapters',
				'tab'     => 'tabzzz',
				'name'   => __( 'Chapters', 'rwmb' ),
				'type'   => 'group', // Group type
				'clone'  => true,    // Can be cloned?

				// List of child fields
				'fields' => array(
				'tab'     => 'tabzzz',
					array(
					'tab'     => 'tabzzz',
						'name'    => __( 'Chapter Title', 'rwmb' ),
						'id'      => 'chapter_title',
						'type'    => 'text',
						'columns' => 6, // Display child field in grid columns
					),
					array(
					'tab'     => 'tabzzz',
						'name'    => __( 'Page', 'rwmb' ),
						'id'      => 'page',
						'type'    => 'number',
						'size'    => 5,
						'columns' => 6, // Display child field in grid columns
					),
				),
			),
),
);