I used this code for the nested group with add_more, now how can I show the output. My code

<?php

/**
* Title: Section
* Post Type: doc
**/

piklist( 'field', array(
	'type'		=> 'group',
	'field'		=> 'tdoc_section',
	'label'		=> __( 'Section', 'tdoc' ),
	'add_more'	=> true,
	'fields'	=> array(
		array(
			'type'			=> 'text',
			'field'			=> 'title',
			'label'			=> __( 'Section Title', 'tdoc' ),
			'attributes' 	=> array(
		      'class' 		=> 'widefat'
		    )
		),
		array(
			'type'		=> 'editor',
			'field'		=> 'description',
			'label'		=> __( 'Section Description', 'tdoc' ),
			'template' 	=> 'field',
			'options'	=> array(
			    'wpautop' 				=> true,
			    'media_buttons' 		=> true,
			    'shortcode_buttons' 	=> true,
			    'teeny' 				=> true,
			    'dfw' 					=> true,
			    'quicktags' 			=> true,
			    'drag_drop_upload' 		=> true,
			    'tinymce' 				=> array(
			    	'resize' 			=> true,
			    	'wp_autoresize_on' 	=> true
			    )
			)
		),
		array(
			'type'		=> 'group',
			'field'		=> 'tdoc_section_group',
			'label'		=> __( 'Sub Section', 'tdoc' ),
			'add_more'	=> true,
			'fields'	=> array(
				array(
					'type'			=> 'text',
					'field'			=> 'sub_title',
					'label'			=> __( 'Section Title', 'tdoc' ),
					'attributes' 	=> array(
				      'class' 		=> 'widefat'
				    )
				),
				array(
					'type'		=> 'editor',
					'field'		=> 'sub_description',
					'label'		=> __( 'Section Description', 'tdoc' ),
					'template' 	=> 'field',
					'options'	=> array(
					    'wpautop' 				=> true,
					    'media_buttons' 		=> true,
					    'shortcode_buttons' 	=> true,
					    'teeny' 				=> true,
					    'dfw' 					=> true,
					    'quicktags' 			=> true,
					    'drag_drop_upload' 		=> true,
					    'tinymce' 				=> array(
					    	'resize' 			=> true,
					    	'wp_autoresize_on' 	=> true
					    )
					)
				)
			)
		)
	)
));