You can change the invoice currency from the “Manage Customers” section under “Invoices”.
Follow the steps below to change the currency;
Navigate to “Invoices”, click on “Manage Customers” as shown in screenshot below.
Select the customer for whom you want to change the ’Invoice Currency’ then click on ‘Edit’.
Select the currency you want billing in the invoice in the ‘Edit Customer’ pop-up window and click on ‘Update’.
Now navigate to ‘Unbilled Time’ Tab and click on ‘Create Invoice’ blue button.
While on the ‘New Invoice’ Tab, Select the same customer that you had made changes for and the currency will automatically reflect on the ‘Invoice’.