Adding a new exchange rate;
Click New Row on grid Exchange Rates in Currency Detail form.
Symbol
The Symbol is graphical sign used for defined currency ($ - US dollar).
Currency Symbol on Left
This logical value determines on which side of displayed value will be appear currency symbol.
Activate Date
The date from this Exchange Rate is valid. I will be valid until record Exchange Rate with greater date will be created.
Convert
This is formula which describes when value in native currency equals value in just displayed currency.