If you'd like to make the some of the fields in the Form (beta) block to be required, please follow these steps:
- After you've created the Form block in your app and have added all the fields to the form you need to go to the "Developer" section of your app.
- Here you will see all the web services that are available in your app. Please select the web service that belongs to your form.
- Next click the "Input Parameter" tab
- Than select the "Body" tab.
- Mark all the parameters as required.
- Click "Save"