Simple Multi Currency

Hi,

I am trying to understand the process of using multicurrency to dive into statistical arbitrage. 

Somehow I can't seem to find a way to get open and close data from other currencies. It is probably extremely easy, but I didn't find a way on the forums.

I did see a post about Ctraders lacking ability to backtest with multiple currencies,but that topic was quite outdated. 

I hope that someone can show me a example on how to get open and close data from multiple currencies.

Thanks in advance!