How to manage multi-currency expenses?

Hi there I would like to manage the expenses in the following way (with the expenses module of HR): - Everybody can enter their expenses in the currency of the piece of expense (so, there are plenty of currencies) - The user can eventually choose between selected currencies (e.g. USD or EUR) how he wants to be paid. Is this possible to do with just configuration, or is here development required? Thanks & Cheers, bertrand