sample-process-models/example/form-with-nested-items/form_with_nested_items_uischema.json

{
  "ui:order": ["title", "tasks"],
  "tasks": {
    "items": {
      "ui:order": ["title", "details", "start_date", "end_date", "done"],
      "details": {
        "ui:widget": "textarea"
      }
    }
  }
}