Add Row Button in WAD

Dear Friends

In WAD Configuration, We gave no of new rows as 4 and it is displaying 4 rows as shown in above screen shot.

If user wants to enter 5th row then now he need to save and next new 4 rows will be appeared. This is fine.

But is it possible to have a button ADD ROW and after 4 rows, User press add row then he get new row.

Pl advise

Rgds

Sri G