Click on Settings >> Click on Alert Behavior >> Choose Configure Incidents.
Pop Out of Ack:
In the midst of a major fire-storm (or in the middle of the night) it is possible for incidents that have been acknowledged to be forgotten or ignored. This feature allows admins to configure the amount of time an incident can sit in an acknowledged state before it is automatically re-triggered.
Simply check the box and select a time-frame and any incidents that have been acknowledged but unresolved for that time-frame will automatically be re-triggered. The incident will return to a triggered (un’acked) state and start again at the beginning of the escalation policy for the team that received the incident initially.
The Auto-Resolve function allows admins to automatically resolve any incidents that have been open longer than a configured time-frame.
Please note that both of these features are global settings, which means that they will be applied to ALL incidents. We are planning to add more customization to these features that give admins more fine-grained control based on the routing_key of the incident. This will eventually allow admins to configure these settings for specific alerts. If you feel this would be useful for your organization, feel free to contact firstname.lastname@example.org to throw your weight on the scales for that feature request.