Multi Field in repeatable Form

array(
                'label' =>  __('Quiz Contents', 'framework'),
                'desc' => __('Create quiz question, answer, and options', 'framework'),
                'id' => $prefix . 'frenzy_quiz',
                'type' => 'repeatable-group',
                'groupfield' => array(
                        array( 'label' =>  __('Name of the artist', 'framework'),
                               'type' =>  'text',
                        ),
                        array( 'label' =>  __('Artist Album List', 'framework'),
                               'type' =>  'textarea',
                        ),
                        array( 'label' =>  __('Artist Homepage', 'framework'),
                               'type' =>  'text',
                        ),
                ),
                'location' => 'post',
        ),

case 'repeatable-group':
                            echo '<a class="repeatable-add button" href="#">+' . __('Add Row','framework') . '</a>
                                    <ul id="'.$field['id'].'-repeatable" class="custom_repeatable repeatable_group">';
                            $i = 0;
                            if($meta) {
                                foreach($meta as $row) {
                                    $j = 0;
                                    echo '<li>';
                                    foreach($field['groupfield'] as $groupfield) {
                                        switch ($groupfield['type']) {

                                        case 'text':
                                        echo '
                                                <p><label>'.$groupfield['label'].'</label><input size="30" type="text" name="'.$field['id'].'['.$i.']['.$j.']" id="'.$field['id'].'" value="" size="30" /></p>';

                                        break;
                                        case 'textarea':
                                        echo '<p><label>'.$groupfield['label'].'</label>
                                        <textarea name="'.$field['id'].'['.$i.']['.$j.']" id="'.$field['id'].'" row="20" cols="35"></textarea>
                                        </p>';

                                        break;
                                        }

                                        $j++;
                                    }
                                    echo '<a class="repeatable-remove button" href="#">-</a></li>';

                                    $i++;
                                }

                            }
                            else {
                                $j = 0;
                                echo '<li>';
                                foreach($field['groupfield'] as $groupfield) {
                                    switch ($groupfield['type']) {

                                    case 'text':
                                    echo '
                                            <p><label>'.$groupfield['label'].'</label><input size="30" type="text" name="'.$field['id'].'['.$i.']['.$j.']" id="'.$field['id'].'" value="" size="30" /></p>';

                                    break;
                                    case 'textarea':
                                    echo '<p><label>'.$groupfield['label'].'</label>
                                    <textarea name="'.$field['id'].'['.$i.']['.$j.']" id="'.$field['id'].'" row="20" cols="35"></textarea>
                                    </p>';

                                    break;
                                    }

                                    $j++;
                                }
                                echo '<a class="repeatable-remove button" href="#">-</a></li>';

                            }
                            echo '</ul>
                                <span class="description">'.$field['desc'].'</span>';
                        break;