Here is an example what this article means: http://demo.currency-switcher.com/shop/clothing/ninja-silhouette-2/
To insert WOOCS drop-down into woocommerce single page you are need to create folder 'woocommerce' in your current WordPress theme, then create in that folder new folder 'single-product' and drop there file price.php which you can take from wp-content\plugins\woocommerce\templates\single-product\price.php
In price.php after:
1 | <p class="price"><?php echo $product->get_price_html(); ?></p> |
add code:
1 | <p><?php echo do_shortcode('[woocs]'); ?></p> |
as on the screen:
