How do I change the exchange rate in an order?

1. Open a purchase order.
2. Select the desired order line and click on the 3 dots (...)
3. Click on Select currency...
4. Select the desired currency. 
5. Open the tab General.
6. You can now change the exchange rate for this order. The exchange rate as configured in MXSuite module Administration is used by default.
7. Click on Save as draft.