Hi Eric,

Please add the custom code below. (How to add custom code?):

add_action( 'wp_footer', function () {
    ?>
    <style>
        .wooco_component_layout_list .wooco_component_product_selection {
            flex-direction: column;
        }
        .wooco_component_layout_list .wooco_component_product_selection_list.wooco_component_product_selection_hide {
            display: none;
        }
        .wooco_component_layout_list .wooco_component_product_selection_toggle {
            display: block;
            width: 100%;
            padding: 20px;
            margin-bottom: 10px;
            text-align: center;
            border: 1px solid #dddddd;
            cursor: pointer;
            -webkit-user-select: none;
            -ms-user-select: none;
            user-select: none;
        }
        .wooco_component_layout_list .wooco_component_product_selection_toggle:hover {
            border-color: #999999;
        }
        .wooco_component_layout_list .wooco_component_product_selection_toggle:before {
            content: '↓';
            margin-right: 10px;
        }
        .wooco_component_layout_list .wooco_component_product_selection_toggle.wooco_component_product_selection_close:before {
            content: '↑';
        }
    </style>
    <script type="text/javascript">
      (function($) {
        $(function() {
          // ready
          if ($('.wooco_component_layout_list').length) {
            $('.wooco_component_layout_list').each(function() {
              $('<div class="wooco_component_product_selection_toggle">View component products</div>').
                  insertBefore($(this).find('.wooco_component_product_selection_list'));
              $(this).
                  find('.wooco_component_product_selection_list').
                  addClass('wooco_component_product_selection_hide');
            });
          }
        });
        $(document).on('click touch', '.wooco_component_product_selection_toggle', function(e) {
          $(this).toggleClass('wooco_component_product_selection_close');
          $(this).
              closest('.wooco_component_product_selection').
              find('.wooco_component_product_selection_list').
              toggleClass('wooco_component_product_selection_hide');
        });
      })(jQuery);
    </script>
    <?php
}, 99 );

And the result:

This snippet applies only to components with the list layout. You can choose another layout for other components.