How to Create "Currency Baskets" in MT5?

 

Hello all, on trading view its possible to create currency baskets like the yen basket (JPYBASKET) but on mt5 I'm not sure how to go about this. 

I have zero experience in create custom symbols other than downloading tick data from dukascopy so I'd thought I would ask if anyone knew how to do this for mt5. I tried searching the forum for related posts but couldn't find anything. If anyone has any advice I would love to hear it