The Related Products tab allows you to link the current feature to selected products. The feature will then show up as a link on the detailed product information page and the product will show up for the feature (assuming the product is turned on to be displayed and in stock, etc.)
The related products function works the same as in the Product Manager. You will be provided with the same options for searching and browsing the categories as on the main Product Manager page. Use these to locate the products you wish to link to, check off the box in front of each one and click Add Products.
A list of the Currently Related Products will also be displayed. You can Remove, Edit or View the related products from this list.