If your Magento installation has multiple websites, stores, or views, you can set the scope of a configuration setting, product, category, or attribute to apply to a specific website, store, or store view. To learn more, see: Websites, Stores & Views.
Product Information: Websites
To assign a product to a store view:
1. In the Product Information panel on the left, select Websites.
2. Select the checkbox for each store view where the product is offered for sale.
3. When complete, click the Save button.