Start Building Professional
Web Apps Today

sub_row_grid

Is there a way I can decide the the size and x,y cordination of the sub_row_grid ?

Height of sub-row defined by height of content 
Position and width - calculated from grid settings ( sub-row takes space from the related cell to right border of grid )

You can control widht of columns in sub-grid, but you can't control position and size of sub-grid's area