I created a warning error in our forms, that asks the user in which municipality they live. This is included in our approval process but this warning was requested as an additional check.  I thought that since required fields were required the submit button on the warning wouldn't work. It did. So I had to hide the submit button and only allow it to be shown after a signature was written. I did get help from my VAR on this. In the Layout section when I edit the field I went to advanced and put townvillage in the CSS class part. Then used this code. 

    //Hide submit button
  $('.Submit').hide(); 
  
    //bind Submit button to signature
    $('.signSignatureBtn').click(function () { 
        $('.Submit').show(); //show the submit button after signing 

    });

    $(document).on('click','.form-sig-remove',function(){ 
        $('.Submit').hide(); //hide the submit button if the signature is removed 
    });

    $(document).on("change", ".townvillage", function () {
        if ($('.townvillage input:checked').val()!="value"){
            $('.form-sig-remove').trigger('click');
        }
    });
  });