A new module is available in the Prices section to let you manage currency exchange rates. This is particularly helpful when orders are placed in a different currency than the default one (as defined in your default price list). Orders can then be converted in the default currency by applying exchange rates, for example when showing grand totals in orders listings or in sales reports.
By default, Le New Black applies currency exchange rates provided by CurrencyLayer (https://currencylayer.com/). Currency exchange rates are updated every day.
As a brand manager, head to the top navigation and click on "Collections / Price lists", then click on the Exchange rates and define your currency rates.