To add currency for the Parcel Quotation Add on plugin is very simple. Just use the “wpcpq_currency_country” filter. this filter has one arguments “$currency”.

// In this sample code in adding Algerian Dinar currency.
add_filter('wpcpq_currency_country', function( $currency ){
	$currency['DZD'] = 'Algerian Dinar (دج)';
	return $currency;
},10, 1);