For set attribute follow the steps bellow
1) Store>Product>Add Product
2) Create configuration from configuration
3) Create new attributes
4) Fill following boxex or fill necessary fields and Save attribute
5) Now it will be show in attribute list, Mark the check box and click next
6) Select all then Press next
7) Then Click next
8) Generate product
9) then add images and quantity
10) Atribute added with product
