Hi platinum87
You can custom in BO > SNS Mega Menu
eg:

<div class="row">
	<div class="col-sm-3">
		<h4>xxx</h4>
		<ul>
			<li>xxx</li>
			<li>xxx</li>
			<li>xxx</li>
		</ul>
	</div>
	<div class="col-sm-3">
		<h4>xxx</h4>
		<ul>
			<li>xxx</li>
			<li>xxx</li>
			<li>xxx</li>
		</ul>
	</div>
	<div class="col-sm-3">
		<h4>xxx</h4>
		<ul>
			<li>xxx</li>
			<li>xxx</li>
			<li>xxx</li>
		</ul>
	</div>
	<div class="col-sm-3">
		<h4>xxx</h4>
		<ul>
			<li>xxx</li>
			<li>xxx</li>
			<li>xxx</li>
		</ul>
	</div>
</div>

Thanks!