Meta Box

Here's the code:

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

function resource_data( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = [
        'title'      => __( 'Resource Data', 'oslc' ),
        'id'         => 'acf_group_53e11a12c9378',
        'post_types' => ['resource', 'attachment'],
        'fields'     => [
            [
                'name'       => __( 'Authors', 'oslc' ),
                'id'         => $prefix . 'authors',
                'type'       => 'group',
                'clone'      => true,
                'sort_clone' => true,
                'max_clone'  => 0,
                'add_button' => __( 'Add Row', 'oslc' ),
                'fields'     => [
                    [
                        'name'     => __( 'Author Type', 'oslc' ),
                        'id'       => $prefix . 'author_type',
                        'type'     => 'select',
                        'options'  => [
                            'scientist' => __( 'OSLC Scientist', 'oslc' ),
                            'other'     => __( 'Other', 'oslc' ),
                        ],
                        'std'      => 'scientist',
                        'required' => true,
                    ],
                    [
                        'name'      => __( 'OSLC Scientist', 'oslc' ),
                        'id'        => $prefix . 'scientist',
                        'type'      => 'post',
                        'post_type' => ['scientist'],
                        'visible'   => [
                            'when'     => [['author_type', '=', 'scientist']],
                            'relation' => 'and',
                        ],
                    ],
                    [
                        'name'    => __( 'Other', 'oslc' ),
                        'id'      => $prefix . 'other',
                        'type'    => 'text',
                        'visible' => [
                            'when'     => [['author_type', '=', 'other']],
                            'relation' => 'and',
                        ],
                    ],
                ],
            ],
            [
                'name'        => __( 'Attachment Type', 'oslc' ),
                'id'          => $prefix . 'attachment_type',
                'type'        => 'select',
                'options'     => [
                    'File' => __( 'File', 'oslc' ),
                    'Link' => __( 'Link', 'oslc' ),
                ],
                'placeholder' => __( '- Select -', 'oslc' ),
            ],
            [
                'name'             => __( 'File', 'oslc' ),
                'id'               => $prefix . 'file',
                'type'             => 'file_advanced',
                'max_file_uploads' => 1,
                'visible'          => [
                    'when'     => [['attachment_type', '=', 'File']],
                    'relation' => 'and',
                ],
                'max_status'       => false,
            ],
            [
                'name'    => __( 'Link Text', 'oslc' ),
                'id'      => $prefix . 'link_text',
                'type'    => 'text',
                'visible' => [
                    'when'     => [['attachment_type', '=', 'Link']],
                    'relation' => 'and',
                ],
            ],
            [
                'name'    => __( 'Link URL', 'oslc' ),
                'id'      => $prefix . 'link_url',
                'type'    => 'text',
                'visible' => [
                    'when'     => [['attachment_type', '=', 'Link']],
                    'relation' => 'and',
                ],
            ],
        ],
    ];

    return $meta_boxes;
}

And here's a screenshot of the fields not being editable: