Within Pagerduty there is a concept of 'urgency' for incidents. Based on the level of urgency different rules get applied.
This should be configurable within Kibana to set the Urgency. I see this was previously raised for watcher but hasn't been actioned.
Is it possible to get this added, I think it would be a small change. All thats required is adding a dropdown box to select the Urgency based on alert.