Make it possible to decline a Seminar booking via email, e.g. Outlook.
Example:
- Manager enrols team member on seminar event or user signs up.
- Users receives a booking notification with the iCal event stored in Outlook.
- User declines through Outlook.
- User has successfully declined seminar via Outlook and attendance is removed.
- Manager gets notified (dependant on whether the notification is set to go to the manager).
One possible solution would be to add a cancellation URL containing a token linked to a specific user who has received the booking confirmation on the iCal event within Outlook.