Even though the base currency in the Booking Manager is Euro, you still can work with different currencies and send offers or invoices with different currencies.
1. How to get currencies and their exchange ratesThe easiest way to get all available currencies is to synchronize with Central European Bank. In order to do this you must go to Work (1.) > Exchange rates (2.) and when the exchange rate window opens click on Synchronize with Central European Bank (3.)
Since the exchange rate changes you will have to do this frequently yourself since the process is not automatic.
If you prefer you can fix the exchange rate for a currency by selecting it and double clicking on Exchange rate field (4.). Set the value and press Enter on your keyboard.
If you synchronize again that value will be overwritten with new synchronized data.
2. Creating the reservation with alternate currency
Make a new reservation in the same manner as you would a standard one in Euros and then click on Invoice detail (1.).
Now select Alternative currency (2). from the select and the exchange rate (3.) will load from the exchange rates. You can set the exchange rate freely as you like. Press Apply (4.) when done.
When you send the offer the final amount will have values in Euros, but will also have values in Alternative currency in brackets.
Since usually there are 2 payments for the charter the exchange rate has most likely changed in the period between payments therefore you are able to issue advance payments invoices that note that even though their main currency is Euro the value in alternative currency has been calculated with different exchange rates.
Exchange rate on each payment can be changed by double clicking on the field (1.) and changing the rate. You can also place the exchange rate in the Remark (2.) field and it will be visible on the advanced payment invoice.