Expanding a Cell's content to fullwidth

[rajasaur]

Hi
Not sure if this is the right place to ask, but I tried to create a 3-row Layout into one cell of a 2-cell Layout. Something like

Col1 | Row 1
Row 2
but it looks like the rows (in the second col) are left aligned and only take up half the space. Is it possible to make them go full-width.