Add a Currency in Multi Currency – Help Center

To add a currency in Multi Currency, follow these steps:

From "Shopify Admin", select Apps.
Select Multi Currency.
Select Add Currency.
Under "Search for a currency", enter the currency you would like to add.
Select the New Currency from the drop-down list.
Select Use this currency as my store's default to make this your store's default currency (optional).
Select Add Currency.
Select the Toggle to enable it.

Note: The toggle will be green when the currency is enabled and gray when it is disabled.