After selecting the Product SKU's tab, you can now create all the SKU's for this product. SKU's (Stock Keeping Units) are the variants of each product. For example, the Iphone XR is available in 6 different colours: Red, Coral, Yellow, Blue, Black and White; and 3 storage capacities of 64GB, 128GB 256GB - each combination of these is a SKU, and you may have a different price set per SKU.
Click on the Add button to add a SKU.
Type the information required as follows:
Colour (required data item) : Type the colour of the SKU
Size (required data item) : Type the storage capacity of the SKU
Price (required data item) : type the price of this SKU
If you need to add another SKU, click on the Add button again and repeat the process.
After all SKU's have been created, click on the Save button