"sidebar.php" . :
<div id="secondary" class="widget-area" role="complementary">
<?php do_action( 'before_sidebar' ); ?>
<?php if ( ! dynamic_sidebar( 'sidebar-1' ) ) : ?>
<?php endif;
</div>
if, . , functions.php.
, , "div", . "sidebar-lower":
<div id="secondary" class="widget-area" role="complementary">
<?php do_action( 'before_sidebar' ); ?>
<?php if ( ! dynamic_sidebar( 'sidebar-1' ) ) : ?>
<?php endif;
<?php if ( ! dynamic_sidebar( 'sidebar-lower' ) ) : ?>
<?php endif;
</div>