For Currency Mapping, login to your admin panel and Navigate to Excellence-Currency Mappimg.
You will navigate to page like this-
Click on "Add Mapping" button and fill the following parameters-
Choose from dropdown for which store you want to map the currency.
Select countries from dropdown to map currency with.
Select required Currency Mapping for necessary countries and click on Save Mapping button.
For Currency Setup, Navigate to Excellence->Geoip Configuration->General->Currency Setup
Fill the Base Currency, Default Display Currency, Allowed Currencies and Save Config.