Multi-Currency can only display currencies on your storefront and does not have the ability to convert currencies in Shopify's checkout by itself. If you have a grandfathered plan for Bold Cashier installed on your store, you can offer currency conversions on the checkout page.
Please visit Cashier & Multi-Currency Integration for more information on setting up this integration.
To edit rounding rules for a currency in Multi-Currency, please follow these steps:
- From Shopify's admin, select Apps.
- Select Multi-Currency.
- Under "Currencies", select the Gear Icon next to the currency you would like to edit.
- Under "Rounding rules", select the Gear Icon next to the rule you would like to edit.
- Adjust the rules accordingly.
- Select Save Rule.
That's it! To test your rounding rule, enter an amount under "Sample Price" in the "Want to test your rules?" box and select Test it!