When you create an API connection (e.g. Product Feed) to Amazon, you specify the marketplace ID. The marketplace ID is equivalent to the Country Code and Amazon Marketplace you are selling in.
For example, Amazon has the following marketplace ID's.
In your Hyperspace account settings you select the Country specific to the Hyperspace account and Amazon account you created. Hyperspace populates the correct Amazon Marketplace ID for you based on your Country selection. The Marketplace ID is required in order to send products to Amazon. Amazon requires that you specify the Marketplace ID when creating new listings.
You can configure settings for your Amazon account specifically for that Amazon Marketplace.
Hyperspace also supports adding additional Amazon accounts to your Hyperspace account. This enables you to sell products from 1 Lightspeed Retail Account and 1 Hyperspace Account to 2 different marketplace ID's (or even 2 different Amazon Seller ID's).
For an additional subscription fee (+$75/month) Hyperspace can activate 2 tabs at the top of the Hyperspace screen for each Amazon account. it can show Amazon and Amazon 2.
Each account has its own settings. You can configure each account differently.