All forms (Estimates, Invoices, Receive Payment, Sales Receipts, Credit Memo/Refunds, Bills, Pay Bill, Check Payments, Purchase Orders, and Vendor Credit) in FaceAzure Online can be printed in Khmer Riel currency.
However, you are required to set up an exchange rate daily following the exchange rate value of the NBC website:
https://www.nbc.gov.kh/english/economic_research/exchange_rate.php