Geolocation

<?php
add_filter('rwmb_meta_boxes', function ($meta_boxes) {
    $meta_boxes[] = [
        'id'     => 'geolocation6',
        'title'  => 'GeoLocation6',
        'post_types' => 'page',
        'geo'    => true,
        'fields' => [
            [
                // In cloneable groups.
                'type'   => 'group',
                'name'   => 'Locations',
                'id'     => 'g',
                'clone'  => true,
                'fields' => [
                    [
                        'type' => 'text',
                        'name' => 'Address',
                        'id'   => 'address6',
                    ],
                    [
                        'type'          => 'text',
                        'name'          => 'City',
                        'id'            => 'city',
                        'address_field' => 'address6',
                    ],
                    [
                        'type'          => 'text',
                        'name'          => 'Country',
                        'id'            => 'country',
                        'address_field' => 'address6',
                    ],
                    [
                        'type'          => 'text',
                        'name'          => 'Latitude',
                        'id'            => 'lat',
                        'address_field' => 'address6',
                    ],
                    [
                        'type'          => 'text',
                        'name'          => 'Longitude',
                        'id'            => 'lng',
                        'address_field' => 'address6',
                    ],
                    [
                        'id'            => 'map',
                        'type'          => 'map',
                        'name'          => 'Map',
                        'address_field' => 'address6',
                        'language'      => 'en',
                        'api_key'       => 'AIzaSyB5M3fZicGMrv2yntQmk1gPVRXn3SQaZ9g',
                    ],
                ],
            ],

            // Another group of fields in the same meta box.
            [
                'type' => 'text',
                'name' => 'Address7',
                'id'   => 'address7',
            ],
            [
                'type'          => 'text',
                'name'          => 'City7',
                'id'            => 'city7',
                'binding'       => 'city',
                'address_field' => 'address7'
            ],
            [
                'type'          => 'text',
                'name'          => 'Latitude7',
                'id'            => 'lat7',
                'binding'       => 'lat',
                'address_field' => 'address7',
            ],
            [
                'type'          => 'text',
                'name'          => 'Longitude7',
                'id'            => 'lng7',
                'binding'       => 'lng',
                'address_field' => 'address7',
            ],
            [
                'id'            => 'map7',
                'type'          => 'map',
                'name'          => 'Map7',
                'language'      => 'en',
                'address_field' => 'address7',
                'api_key'       => 'AIzaSyB5M3fZicGMrv2yntQmk1gPVRXn3SQaZ9g',
            ],
            [
                'id'      => 'non_binding8',
                'type'    => 'select',
                'name'    => 'Non binding field',
                'options' => [
                    'a' => 'A',
                    'b' => 'B',
                ],
            ],
        ],
    ];

    $meta_boxes[] = [
        'id'     => 'geolocation9',
        'title'  => 'GeoLocation9',
        'geo'    => true,
        'fields' => [
            [
                'type' => 'text',
                'name' => 'Address9',
                'id'   => 'address9',
            ],
            [
                'type'          => 'text',
                'name'          => 'Latitude9',
                'id'            => 'lat9',
                'binding'       => 'lat',
                'address_field' => 'address9',
            ],
            [
                'type'          => 'text',
                'name'          => 'Longitude9',
                'id'            => 'lng9',
                'binding'       => 'lng',
                'address_field' => 'address9',
            ],
            [
                'id'            => 'map9',
                'type'          => 'map',
                'name'          => 'Map9',
                'language'      => 'en',
                'address_field' => 'address9',
                'api_key'       => 'AIzaSyB5M3fZicGMrv2yntQmk1gPVRXn3SQaZ9g',
            ],
        ],
    ];

    return $meta_boxes;
} );