In this area you select the currencies to be used in the store. You can select both primary and secondary currencies. The billing will always be performed using the primary currency. Secondary currencies are used for display only.
To define primary and secondary currencies:
1. In the Localization
section, select the currency
you want to use in the store from the Primary
Currency list.
The actual billing will always be performed in that currency.
Note that when changing the currency, a warning message notifies you that only the currency name is going to be changed, but there will be no price conversion from the previous currency to the new one. Once you change the currency, the new settings will take effect in the Storefront price display. The previous orders will not be affected by the currency change.
2. If you want to select secondary currencies, in the Secondary Currencies table select the checkbox next to the currency name and enter the exchange rate. The currencies appearing here are the ones defined in the Presets > Currency Setup.
You can either use the exchange rates defined globally in the Presets or define exchange rates applicable for a specific store. By default, the Use Rates from Presets checkbox is selected and, as a result, the exchange rates defined in the Presets > Currency Setup are applied for the store. To define exchange rates that are different from the ones defined in the Presets and applicable for your store only, fill in the Exchange Rate field for the selected currencies.
The exchange rates are defined with respect to the primary currency. Please note that the primary currency is different from the reference currency defined in the Presets.
Learn about configuring currency
exchange rates used on stores 