To enable multi-currency, navigate to the Invoicing -> Configuration -> Settings menu and enable the Multi-Currencies setting.
To activate the required currencies, click on the Activate Other Currencies link. In the list of currencies that appear, simply toggle the Active switch to activate a currency.
To update the exchange rate for a currency, go to Invoicing -> Configuration -> Accounting -> Currencies and click on the currency record then click on the Rates button.
Create an exchange rate for a specific date by clicking on the Create button.
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