I am not clear what you want.
In FormsCentral, you can resize the field size as what you want. Please see below image. The three Text fields have different size. Select a field, move mouse to the right edge of the field, and then drag and drop.
And if you want to create a new section, you can insert a new page in your form via clicking New Page button. Please refer below image.
Hope it will help you!
The whole form always share the same label width for the fields in the first 'column' of the form when the label is on the left (even when you use page breaks). You could try to put the label on top and see if that helps with your form design.
This doesn't help us.
We have a form that goes from having 1 field on a line to 3 fields on one line then 5 small fields on another line.
You end up with very skinny and long labels which doesn't work.
We have tried to put the loabels on top however this still doesn't fix the problem with the label widths changing to the smallest.