Smartform:How to let "Basic info window" display on every page?

Hi experts,

I am develop a invoice smartform

Page design as followed(From top to bottom):

1, Basic info window(Secondly window)

2, Items data(Main Window)--

3, Footer window(Secondly window)

My question is that if main window take more than one page, how can I make "Basic info window" displayed on every page?

Thanks