To register simple products 

If you need to have selection of variation such as  S|M|L and put different price  

What is a release?

A release is a contractual agreement that provides certain legal protections to the photographer or videographer and the customers who license those images. The most common types of releases are model and property releases. Model releases govern how an image featuring a recognizable individual may be used. Property releases govern how an image taken on private property may be used.
If content depicts an identifiable person, you should obtain a valid model release to use the content commercially. Likewise, if you are shooting on private property, or shooting private property which is distinctive from a public place, be sure to obtain a property release from an authorized representative of the property. 
Please send document with products to