change required column when import products?

[fitgura]

Hi all!!

When we import products the name* is the required field in the section, but we want to update products day to day and the

price and quantity in the csv just relation with the Ean13 (barcode) in our store keeper software

That is why I wondering if it could possible to change the required fielt to Ean13 then we coluld update the products quantity and price...

but how can I set the EAN13* up????