How can i add input/output fields in the subscreens

Hi folks,

I want to create two subscreens onto a main screen.

For that, i went to se51 and defined a main screen e.g.1100. with normal screen attributes.

Again, in the se51 initial screen i gave screen number e.g.110 with subscreen attribute.When i go to layout of subscreen i am unable to add any field or push button to that..

My issue is to display the drawn data on a subscreen.

Thanks for your answers in advance.....

Regards,

Ranjith.T.