Hi
You can use the position navbar-category.
But if you want to get the same style you need to customise the module and the position code i the tpls/blocks/mainnav.php
Find
`
<?php if ($this->countModules(‘navbar-category’)) : ?>
<div class="col-md-3 hidden-sm hidden-xs">
<div class="wrap t3-navbar-category <?php $this->_c('navbar-category') ?> <?php if (!$this->countModules('t3-features-intro')) echo "category-dropdown"; ?>">
<jdoc:include type="modules" name="<?php $this->_p('navbar-category') ?>" style="T3xhtml" />
</div>
<!-- //NAVBAR CATEGORY -->
</div>
<?php endif ?>
And customise it based on your 3rd party module.
Regards