Advise about creating a simple GUI master/detail

Hi All,

I have to create a pop-up window that contains a GUI to modify an Order object made up of :

  • header data ( purchase date,customer,etc.)
  • details data (order items : quantity,price,vat,etc.)

I was thinking to use a Tab component : the first tab with header data and the second tab with an editable table for the order items.
Any better suggestion, like using an Add-on ?
Cheers.

                  Stefano