Show TotalAmount in diferent Currencies on invoice

I have been using this excellent accounting software for my trading company. And just recently we have started our trading with UAE, so, now we need to generate invoices' total amount with 2 different currencies. I am myself a PHP Developer but not a user of Laravel. So, is that possible? is there any app for this in Akaunting? or can I do it myself?

When we create a new invoice, we can see that there is an option to select conversion currency and then enter exchange rate. It then converts it but does not show it on invoice. On invoice it only shows default currency of invoice but not the one we chose with exchange rate.

How can we show 2 currency on our invoices? one be the invoice default currency and second to be with exchange rate we just entered