fd.rendered(function () {
//chnage custom value text
fd.field('Field1').customValueTitle = 'New text';
//move custom value input on top
var customValue = $(fd.field('Field1').$el).find('.fd-fill-in-choice');
$(fd.field('Field1').$el).find('.fd-fill-in-choice').remove();
$(fd.field('Field1').$el).prepend(customValue)
});