Since version 4.7.10, the store locator has added its template customizer through which you can easily customize the UI of the list or the infobox of any provided template, anything that is added through the customizer will not be lost even if the plugin is upgraded or deleted, so you don’t need to worry about the changes and you can easily upgrade to the latest version.
To open the customizer tab, go to the ASL Settings in your WordPress Sidebar, and click on the Customizer Tab.
Now you need to select the template that you are using from the template dropdown, also please select either you are customizing the infobox or the list of the store locator, and click on the Load Template button.
Now, once you will click on the Load Template button, the HTML code of the template will appear in the editor where you can do all the required changes, such as adding new content or adding a custom field value, or creating a new call to action button in the list.
In this example, we will replace the category names with the category icons in the store locator list
The above code can be copied down here below to use.
{{for categories}}
<li>
<a><img src="{{:URL}}svg/{{:icon}}" alt="{{:name}}" width="60"></a>
</li>
{{/for}}
Once you have added your code, you can press the Save Template button to apply the changes, in case your changes are not appearing make sure you are updating the correct template file from the template dropdown.