The Nav Social Menu widget area is styled for the Simple Social Icons widget. This widget displays the social icons on your site. You can drag and drop a Simple Social Icons widget from the available widgets area to the Nav Social Menu widget area and then configure as seen below.
This theme uses the Simple Social Icons plugin to display the social icons. To add this plugin to your site navigate to Plugins>Add New and search for Simple Social Icons in the search box. Once you see the plugin appear in the search results click to install it. When installation is complete click to activate the plugin.
To add the icons to your site navigate to Appearance > Widgets and drag a Simple Social Icons widget from the available widgets section into one of the theme widget areas.
The Simple Social Icons widget in the Nav Social Menu widget area. Below is a screenshot of the settings we are using for the social icons. Be sure to update the widget settings with the urls to your own social media accounts.