Welcome aboard to the Community space, amcaskill.
I want to share some details about creating accounts in the Chart of Accounts.
Once the Multicurrency feature is enabled, you can only select a currency for the Bank, Credit Card, Accounts Receivable and Accounts Payable account types. Income and Expense accounts are automatically defaulted to the home currency of your QuickBooks system and this is the basis for the reports.
For more information about adding foreign-currency accounts you can visit this article (scroll-down to Step 3: Add foreign-currency accounts):
Set up and use Multi-currency
Let me know if you need more information about this feature. I'll be sure to get back to you.