Product Compatibility

From the Product Details screen is a tab called Compatibility. 

This will allow users to add Products that are compatible with the base product.  In the example below, when selling the LCD TV sales staff may check the Compatibility screen to see if the Customer would like a TV Stand, Wall Bracket or AV Cabinet. 

The list of Compatible Products can be managed individually under each Product Code or as an entire list under Admin / Settings / Manage Product Compatibles