Geniusproject lets you manage a main currency and up to 9 secondary currencies.
The main and secondary currencies are defined in the [Currencies] tab of the "General" setup of each [Projects] module.
Therefore it is possible:
To capture costs documents in any currency entered into the system.
To see task costs in both the main currency and the first secondary currency.
To create views using either the main currency or the first and/or secondary currency.