The way currencies is currently organized is a little temperamental so we've made a guide for you:
Currencies are ONLY reflected in orders. That means that you have to have activated the Currency field when selecting your Order Fields. If you haven't done so, please contact us.
To create a currency option, go to the tab in Manage>>Currencies.
That will allow you to add multipliers for each currency.
The multipliers affect all the pricing data you've entered in the Printer Type, Post Processing Type. Those numbers are currency agnostic. They are simply a number. That number gets multiplied with the respective currency number to give you the final price in the Order Page. So if your Print Time is 1h and cost/hr is 100, and you have a multiplier for EUR of 1.5 then the Print cost will be 150.
We know it's not the most intuitive way of handling currencies. We're working on improving it.