how to modify the layout and coding for 'RVORDER01' after copying ..

Hi all,

I am trying to modify standard script layout SALES ORDER for Quotation,

i.e. I had copied standard form 'RVORDER01' to 'ZBAT_RVORDER01'.

and now I am trying to compress the information box. But no box in the layout was selecting while trying to resize it. Can any one help in this issue.

And I also want to know, how to modify the coding in that standard script. i.e. to add a perform statement and etc..

Thanks in advance,

Surender.