Customize Template in Theme or Child Theme

1: Customize template

The First: You have to create "ovabrw-templates" in your theme or child theme

The Seconds: Copy files in

plugins/ova-brw/ovabrw-templates/*.php 
to
themes/your-theme/ovabrw-templates/ folder.

2: Example

If you want to customize "[ovabrw_search/]" shortcode, you have to copy file:

plugins/ova-brw/ovabrw-templates/shortcode/search_form_full.php
to
themes/your-theme/ovabrw-templates/shortcode/search_form_full.php

3: Customize Modern Template

Listing Product, Card Template

Copy files in 
Plugins/ova-brw/ovabrw-templates/modern/products/*.php
to
wp-content/themes/your-theme/ovabrw-templates/modern/products/*.php 

Product Detail

Copy files in 
Plugins/ova-brw/ovabrw-templates/modern/single/*.php
to
wp-content/themes/your-theme/ovabrw-templates/modern/single/*.php