We need to ensure that we are meeting our "time to first response" SLA *but* the clock doesn't start counting until the ticket is approved.
So, I've set up the SLA so that it starts counting when the ticket enters the status "Waiting for Support" and stops when the status changes to "Cancelled", "Closed", "In Progress", "Pending", "Resolved", "Waiting for Customer".
That works fine ... except for the fact that the SLA repeats every time the ticket moves back to "Waiting for Support".
I only want it to count the *first* response. What can I do to get this working?