I have a feeling this may be a configuration issue, but we wanted to send a notification to the requester when the group has changed on a ticket.

 The scenario is we have 3 groups of desktop, infrastructure and Software support. We would like to notify the requester that it has been moved to a new group to be investigated even if it is not assigned to a technician. I can't see a way of creating a custom notification rule on the configuration wizard. 

 I perhaps wondered if instead of using the groups we can use the mode/levels of escalation and change the way our portal is configured and the way we work to manipulate this idea.

 Can anyone advise?