How to stack the checkboxes in mobile view?

Dear Chronoform experts,

I would like to enquire if there's a solution to stacking the checkbox options vertically in a mobile view because currently in a large res like desktop, it is displayed horizontally which is fine. But when you open it in mobile, it gets cramped up and the label runs down.

Here's the website link.
http://www.heroesheadquarters.com/wip/index.php/programs/heroes-family/heroes-family-camp

Unfortunately I don't have the screenshot as my BB is pretty bad but my client sees it in her Samsung Note 3.

Help please!

Hi otaktakcenter,

Have you tried using the Layout: Vertical option in the Checkbox Group?

Bob