Currency exchange RUB -> EUR/USD/UAH or EUR->USD/USD->EUR is based on the Revolut bank rates:
https://www.revolut.com/currency-converterCurrency conversion USD/EUR -> RUB is carried out at EasyStaff's internal rate, which is the actual rate of purchasing RUB by EasyStaff UAB from our transaction processing partner. The exchange rate may change throughout the day. After the currency conversion, you will see the exchange rate in the Currency Exchange tab.
For sales exceeding 10,000 EUR/USD to purchase RUB, or for purchases exceeding 1,000,000 RUB, the "rate approval" applies. This means that after creating the exchange operation, the finance department will set the rate at which the exchange will be made, and you will receive a notification via email and in the service's personal account. Go to the Currency Exchange tab, click the Check Rate button in the request, and in the popup window, click the Approve Exchange button to exchange at the given rate. Click the Cancel Exchange button to cancel the exchange request.
If no action is taken on the request after the rate is set, it will be automatically canceled at 11:59 PM UTC +3. You can create a new request at any time.