The Main Currency is the currency your Trading Account uses to place and execute trades.
Even if you hold funds in multiple currencies, only one currency can be active for trading at a time, and this is called your Main Currency.
How Main Currency works
Each trading account has one Main Currency
All trades are executed using the Main Currency balance
Funds held in other currencies are stored in Pocket Accounts
Pocket Account balances cannot be traded unless that currency is selected as the Main Currency
How to change your Main Currency
You can change your Main Currency directly on the trading screen.
Simply click on the currency you want to trade with
The selected currency becomes your Main Currency instantly
No page change or additional setup is required
Changing your Main Currency does not convert your funds.