To upload the packaging layout, you click on the task.

A page opens

Here you can see the instructions,

and a comment from the design specialist.

You may have below several documents (1) you can download (2) to help you create a packaging layout.

After you created the packaging layout, you enter again this task.

You click on the button "Upload Packaging Layout". 

You browse on your server and select the right file.

After the upload click on the button first on the button "Save" and then on the button "Complete Task".

Finally you confirm with "OK".