woocommerce_product_options_sold_individually хук-событие . WC 1.0
Использование
add_action( 'woocommerce_product_options_sold_individually', 'action_function_name_4594' ); function action_function_name_4594(){ // action... }
Где вызывается хук
woocommerce_product_options_sold_individually
woocommerce/includes/admin/meta-boxes/views/html-product-data-inventory.php 122
do_action( 'woocommerce_product_options_sold_individually' );