"Each Additional" Column is not showing up on the pricing calculator excel file

This will happen when you only have Calculator Parameters and no Grid Parameters. You must have a grid parameter for it to work. Calculator Parameters will ignore it even when there are Grid Parameters. Calculator Parameters always work with the entire quantity, only Grid Parametera consider it by which column it falls into, then uses the each additional area. 

 

Also, review this KB article for detailed information on Calculator Pricing Engine: Ch. 013. Creating a Pricing Calculator Pricing Engine