In functions.php add below code
<?php register_sidebar(array(
‘name’ => ‘Right Sidebar’, // name of sidebar
‘id’ => ‘rightsidebar’,
‘before_widget’ => ‘<li>’, // style tag before this element
‘after_widget’ => ‘</li>’,
‘before_title’ => ‘<h2 class=”widgetTitle”>’, // Title class , you can avoid these fields if you never want to be
‘after_title’ => ‘</h2>’,
)); ?>
You can see the registered sidebar in Appearance >> widget section.
Calling the registered sidebar using id:
<?php dynamic_sidebar( ‘rightsidebar’ ); ?>