Add logic to fields in workflows/task forms: A way to have the dropdown options trigger a sub-dropdown list with items that are only applicable to the item selected in the first dropdown.

This functionality already exists in Work Requests.

For example, we need to know if your dog barks at night, but only if you chose dog in the "Do you have a dog or cat?" field. Cat owners shouldn't have to respond to the question about barking since it's not relevant.