woocommerce_product_options_sold_individually action-hook . WC 1.0

Usage

add_action( 'woocommerce_product_options_sold_individually', 'action_function_name_3790' );
function action_function_name_3790(){
	// action...
}

Where the hook is called

do_action( 'woocommerce_product_options_sold_individually' );

Where in WP core the hook is used WooCommerce