Table window in smartforms

Hi expert,

   How to extend the table length even when we give single item or multiple items? however the table window size differs based on input & data.

Pl sugges me table windos  should be fixed in first page even when we give various input...if the lines items is more than main window it has to go for next page.

Note: Table window should be fixed to bottom window for any type of input & output. it shouldn't be gap...cause based data table window size reduce itself.

Thanks

Savita.