The setup for this is as follows in Gifts Online:

1. Click Launch
2. Click Applications
3. Click Forms Manager
4. Select Settings
5. Click Account Designer
6. Select Emails
7. Select Requirement Retrieval Notification
8. Click the body of the email
9. Uncheck "Do not send notifications"
10. Click Save & Close

Doing this will make the system email the staff member associated with the requirement as well as the grantee.