I'm building a form of checklist actions where certain actions will only be
visible based on earlier decisions. The problem I've got, though, is that
when I hide a section that contains some fields, the hidden section is still
taking up space.

If there are bunch of these hidden sections, it leaves a big white space gap
in my form. I've tried setting the various size values to zero but it isn't
having any effect.

Have I approached this the wrong way, or is there a secret way to improve
the layout?

--Philip