You could add this script to the bottom of the page to address checkbox groups:
$("#form1").submit(function() {
var noneSelected = true;
$("input[name='futureadditionscol[]']").each(function(ind,el) {
if ($(this).is(':checked')) noneSelected = false;
});
if (noneSelected) {
$("#futureadditionscol_1")[0].setAttribute("required","true");
} else {
$("#futureadditionscol_1")[0].removeAttribute("required");
}
});
make sure to replace my reference to 'form1' with the ID of your form.
Did this help? Tips are appreciated...
