You add your donor support number in the Donor Inquiry Phone Number field. To make the change:
1. Log into Sphere using your Administrator username/password
2. Hover over control > Administration > Organization Setup > View/Edit Org Info
3. Click the "edit" button at the very bottom of the screen.
4. Navigate to the "Edit Credit Card Address Verification Defaults" section.
5. Under the field labeled "Donor Inquiry Phone Number:" Enter your Donor Support number in this field.