Create Slider groups

gistfile1.txt

<?php
add_filter( 'rwmb_meta_boxes', 'ie_slideshow_shortcode' );

function ie_slideshow_shortcode( $meta_boxes ) {
    $prefix = 'ie-slider-';

    $meta_boxes[] = [
        'title'  => __( 'IE Slideshow', 'ie-slider' ),
        'id'     => 'ie-slideshow',
        'closed' => true,
        'fields' => [
            [
                'name'              => __( 'Sliders', 'ie-slider' ),
                'id'                => $prefix . 'sliders',
                'type'              => 'group',
                'collapsible'       => true,
                'save_state'        => false,
                'group_title'       => __( 'Shortcode: [ie-slider id=\'{#}\']', 'ie-slider' ),
                'clone'             => true,
                'sort_clone'        => false,
                'clone_default'     => false,
                'clone_as_multiple' => false,
                'clone_empty_start' => false,
                'add_button'        => __( 'Add More Sliders', 'ie-slider' ),
                'fields'            => [
                    [
                        'name'              => __( 'Slider', 'ie-slider' ),
                        'id'                => $prefix . 'slider',
                        'type'              => 'group',
                        'label_description' => __( 'Copy the shortcode above and paste it where you want to see the slider in your content above.', 'ie-slider' ),
                        'collapsible'       => true,
                        'save_state'        => true,
                        'group_title'       => __( 'Slide {#}', 'ie-slider' ),
                        'clone'             => true,
                        'sort_clone'        => true,
                        'clone_default'     => false,
                        'clone_as_multiple' => false,
                        'clone_empty_start' => false,
                        'add_button'        => __( 'Add Another Slide', 'ie-slider' ),
                        'fields'            => [
                            [
                                'name'              => __( 'Title', 'ie-slider' ),
                                'id'                => $prefix . 'title',
                                'type'              => 'text',
                                'required'          => false,
                                'disabled'          => false,
                                'readonly'          => false,
                                'clone'             => false,
                                'clone_empty_start' => false,
                            ],
                            [
                                'name'              => __( 'Image', 'ie-slider' ),
                                'id'                => $prefix . 'image',
                                'type'              => 'image_advanced',
                                'max_file_uploads'  => 1,
                                'max_status'        => false,
                                'force_delete'      => false,
                                'required'          => false,
                                'clone'             => false,
                                'clone_empty_start' => false,
                            ],
                            [
                                'name'              => __( 'Caption', 'ie-slider' ),
                                'id'                => $prefix . 'caption',
                                'type'              => 'text',
                                'required'          => false,
                                'disabled'          => false,
                                'readonly'          => false,
                                'clone'             => false,
                                'clone_empty_start' => false,
                            ],
                            [
                                'name'              => __( 'Description', 'ie-slider' ),
                                'id'                => $prefix . 'description',
                                'type'              => 'wysiwyg',
                                'raw'               => false,
                                'options'           => [
                                    'media_buttons' => false,
                                    'textarea_rows' => 6,
                                ],
                                'required'          => false,
                                'clone'             => false,
                                'clone_empty_start' => false,
                            ],
                        ],
                    ],
                ],
            ],
        ],
    ];

    return $meta_boxes;
}