How to resize the controls in a tablelayoutpanel at runtime manually in C#

I have a Windows form which has a tablelayout panel with 2 rows.

1st row will have a grid called Grid1 and 2nd row will have a grid called Grid2.

So at runtime, the user should be able to resize Grid2 upwards inorder to c more data in grid2.

Its possible by scrolling grid2 to c more data.But the user wants to c by resizing the grid upwards manually to c more data in Grid2.

Pls help me.