Defining master products allows you to sell different versions of a single product from one page in the Public view. For every master product, you can define attributes, add child products, and list cross-sell products.
For example, without a master product, shirts with different attributes are presented individually: small red shirt, medium blue shirt, etc. If you create a master product for all shirts, you can then define attributes so that your customers can go to one page and choose their preferred shirt color and size with a drop-down list.
Every product in the iMIS database can be added as a child product of a master product.