Merge branch '329347-escalation-pollicies-docs' into 'master'

Escalation policies documentation

See merge request gitlab-org/gitlab!63991

doc/operations/incident_management/escalation_policies.md

+---
+stage: Monitor
+group: Monitor
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
+---
+
+# Escalation Policies **(PREMIUM)**
+
+> [Introduced](https://gitlab.com/groups/gitlab-org/-/epics/4638) in [GitLab Premium](https://about.gitlab.com/pricing/) 14.1.
+
+Escalation Policies protect your company from missed critical alerts. Escalation Policies contain
+time-boxed steps that automatically page the next responder in the escalation step if the responder
+in the previous step has not responded. You can create an escalation policy in the GitLab project
+where you manage [On-call schedules](oncall_schedules.md).
+
+## Add an escalation policy
+
+If you have at least Maintainer [permissions](../../user/permissions.md),
+you can create an escalation policy:
+
+1. Go to **Operations > Escalation Policies** and select **Add an escalation policy**.
+1. In the **Add escalation policy** form, enter the policy's name and description, and create
+   escalation rules to follow when a primary responder misses an alert.
+1. Select **Add escalation policy**.
+
+![Escalation Policy](img/escalation_policy_v14_1.png)
+
+### Edit an escalation policy
+
+Follow these steps to update an escalation policy:
+
+1. Go to **Operations > Escalation Policies** and select the **Pencil** icon on the top right of the
+   policy card, across from the policy name.
+1. In the **Edit policy** form, edit the information you wish to update.
+1. Select the **Edit policy** button to save your changes.
+
+### Delete an escalation policy
+
+Follow these steps to delete a policy:
+
+1. Go to **Operations > Escalation Policies** and select the **Trash Can** icon on the top right of
+   the policy card.
+1. In the **Delete escalation policy** window, select the **Delete escalation policy** button.