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This address appears on the Cover Letter (on the Header, as well as in the table) as well as on the second page, under Contact Information. We support all locale which are also supported by Salesforce, for more information read: https://help.salesforce.com/articleView?id=admin_supported_locales.htm&language=en_US&type=0.
To choose which address gets populated into which row please read the 7.5.6 Configure Address Blocks and Contacts on PDF information.