Even you can add your custom menus to the top navigation bar.
change directory /view/theme//template/common/header.tpl
Search:
<div id="menu"> <ul>
Then
<li><a href="YOUR_LINK">Menu_Text</a></li>
And also you can add a predefined menu, for example, "Information", "Customer Support", etc.
Information menu
<?php foreach ($informations as $information) { ?> <li> <a href="<?php echo $information['href']; ?>"> <?php echo $information['title']; ?></a> </li> <?php } ?>
Service Menu
<li><?php echo $text_service; ?> <ul> <li><a href="<?php echo $contact; ?>"><?php echo $text_contact; ?></a></li> <li><a href="<?php echo $return; ?>"><?php echo $text_return; ?></a></li> <li><a href="<?php echo $sitemap; ?>"><?php echo $text_sitemap; ?></a></li> </ul> </li>
Extra menu
<li><?php echo $text_extra; ?> <ul> <li><a href="<?php echo $manufacturer; ?>"><?php echo $text_manufacturer; ?></a></li> <li><a href="<?php echo $voucher; ?>"><?php echo $text_voucher; ?></a></li> <li><a href="<?php echo $affiliate; ?>"><?php echo $text_affiliate; ?></a></li> <li><a href="<?php echo $special; ?>"><?php echo $text_special; ?></a></li> </ul> </li>
Account Menu
<li><?php echo $text_account; ?> <ul> <li><a href="<?php echo $account; ?>"><?php echo $text_account; ?></a></li> <li><a href="<?php echo $order; ?>"><?php echo $text_order; ?></a></li> <li><a href="<?php echo $wishlist; ?>"><?php echo $text_wishlist; ?></a></li> <li><a href="<?php echo $newsletter; ?>"><?php echo $text_newsletter; ?></a></li> </ul> </li>
The above predefined menus only work in the footer area, to add this to the top navigation, you need to make some changes to header.php
Follow this link
how to add info links to navigation menu in opencart?