Hi @Straad !
Are we talking the “markets” section under admin, if so, you can only have one primary market and that should be the same as your store location. If this is under an application, I highly suggest that you reach out to the app developer if it is a third-party application, as they can further guide you on how to properly set up the markets under their app and if it is possible to achieve the duplicate market customization. Otherwise, contact Shopify support team.