Problem attribute product variable

Hello,

When I create a variable product, the attributes do not have the “use for variations” checkbox which prevents me from creating variations. It seems that the variable product behaves like the simple product.

In addition, I was wondering if it was possible to make sure that the created products are put into draft form and not published.

And I was also wondering if it was possible to create the number of lines you want at once.

Thanks in advance,

Best regards