can i do in outsystems grid inside grid or table inside table and the child table has input form in the row ? 

Hi nasser almu5,

You can place a table inside a table. And you can place Forms inside the rows of a table.

Hi Nasser,

Like Marco says, it is possible to place data Widgets (like Table Records, Forms etc.) inside a simple Table, but you cannot place data Widgets directlyinside other data Widgets (e.g. putting a List Records inside a Table Records). What you can do however, is put a Web Block inside a data Widget, and put the second data Widget inside the Web Block.