At this time you can only configure notifications at the Donation Campaigns level. There is not a way to specify notification to just specific forms.
  1. To configure notifications on a Campaign:
  2. Find and "Edit" the Donation Campaign
  3. Click step 3. "Specify Groups and Notifications"
  4. Check the desired boxes and fill in your gift amount and/or email address. To be notified of all gifts:
    • Check "Yes, gifts greater than or equal to the amount specified below are to be treated uniquely."
    • Set the " Large gift amount" to "$5.00" (The standard minimum amount, unless otherwise specified in the site settings)