Do you need to add foreign VAT rates that are different from your country's standard VAT rates ?
Go to Settings > VAT percentages
Click Import VAT percentage
Browse the catalog of available VAT rates and select the ones you'd like to use when creating invoices on the platform, then click on Import percentage.
Note:
importing a document with a foreign VAT rate detected by the OCR will automatically add the new rate to your account so you don't have to do it manually.