How to change quantity in stock option in back office?

[venkatesh]

Hi,

I want to change Quantity in stock option to some other number.How to do this?

This iss what i did--

1.opened prestashop back office.

2.Selected catalog tab.

3.clicked on edit icon of one product.

 

Here I want to increase quantity in stock to some number. But it was not in editable mode.

 

Please help me how to change this quantity?

 

Thanks.