The Layout setting for a Form or Section affects how Fields within that section are displayed on screen. In the Form or Section Settings use the Layout selector to chose the Layout you prefer.  Use the Layout with the Width settings to create more complex Form designs such as side-by-side blocks.

Wrap - This is the default Layout behavior.  Wrap causes Fields to flow down to the next line when no more room is available on the current row.  Basically, this will cause the Fields to try to use the fewest number of rows possible, but as users resize their browser the layout may change dynamically. 

Row - The Row Layout selection tries to fit all the fields on a single Row. You will need to be careful of how many Fields you include because the widths of the Fields will adjust dynamically to squeeze into the Row which can cause the labels to be clipped.

Column - The Column Layout forces all the Fields to stack one on top of the next.