Confirmation Email sent when user submitting a Google Form

1. Go to your Google docs
2. Click the form you produced, which will be shown as EXCEL format
3. Click tools in the top menu bar, select Notification Rule
4. Check the box "A user subits a form" and check "Email-right away".  Click Save.
5. An email will be sent to me when users submit the form.
I try to setup the email notification to other collaborators when users submit the form. But I still can not find the way.