title: Dynamically adding fields based on what is selected in the DropdownField with SilverStripe
body: <p>I am creating a form (using multiform) where I need to be able to generate checkboxes based on what is selected in the dropdown field containing teams. If one team is picked and that team plays in division 1 and division 2, I want to show division 1 and 2 checkboxes so the user can select which division they play in for that team.</p>
  
  <p>Is this possible?</p>