Try an click event on your calendar icon and trigger the focus on input #prefMovingDate
:
$('.input-group').find('.fa-calendar').on('click', function(){
$(this).parent().siblings('#prefMovingDate').trigger('focus');
});
or if this id #prefMovingDate
is unique to the page then you can simply do this:
$('.input-group').find('.fa-calendar').on('click', function(){
$('#prefMovingDate').trigger('focus');
});