Hello Duncan,
this is Iacob from Loway support.
I know that Google is smart but we are smarterter.
By changing that value inside the Queue Detail section, you chose a threshold (in seconds) for the Service Level Agreement. If an Agent answers a call under the set time, the SLA in the reports will go up, and vice versa if he answers after the threshold.
If you have any other technical questions about the product feel free to write at support@loway.ch.
Regards,
Iacob