You can use the Chargent Currency field on the Chargent Order to select which currency a transaction is sent in.
Your payment gateway will need to be set up to process in the currency, otherwise it is typically ignored and processed in the default currency that your account was set up for. For options around processing and settling transactions in different currencies, please contact your payment gateway or payment processor.
Currency can be set at 3 different levels in Chargent.
1. Default currency (for all of Chargent)
2. On the Gateway Record (for all transactions being sent to that Gateway)
3. On the Chargent Order Record (for that individual record)
More information on currency configuration: