Hi sconnolly,
Basically you can send a survey for a ticket from any activity notification. "Closed" activity notification is a common one many people use as they want to send an survey invite when the ticket is closed.However, SDM allows you to send the survey invite from any activity notification(for example "Auto Close" when the ticket is auto-close).
Also you can send a survey based on the Request/Incident/Areas.
To conclude I can only say that we cannot manually on demand send the survey for a particular ticket.
Any more ideas on this from team are welcome.
Thanks
Junaid