I have a form that is being submitted via email through a total of 5 people. So the 1st person signs and send to the second person who signs and sends to the next person and so on. The form is working fine but the problem is perhaps the 2nd or 3rd person needs to attach a file which is not possible after the 1st person signs. I have an "attach file" button which works great until someone signs after which it no longer works. Also, clicking the paperclip and using the add button doesn't work at that point either. The option is greyed out. Now it's important to state that the form is NOT LOCKED for editing at any point. Additional information can be added/updated. It's just the attach file function that is disabled. Is there a way to make this work?