Update CMOC Stakeholder Notification process

Why is this change being made?

Provide a detailed answer to the question on why this change is being proposed, in accordance with our value of Transparency.

Currently we use Incident Notifier to notify stake holders in 2 slack channels. The field names are open to interpretation resulting in some inconsistency with the process.

This will define what is expected in each field and what can be expected when submitting a notification using the tool.

Author and Reviewer Checklist

Please verify the check list and ensure to tick them off before the MR is merged.

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
  • Copy/paste the Slack conversation to document it for later, or upload screenshots. Verify that no confidential data is added, and the content is SAFE
• Assign reviewers for this MR to the correct Directly Responsible Individual/s (DRI)
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the Maintained by section on the page being edited
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies
  • The when to get approval handbook section explains the workflow in more detail
• For transparency, share this MR with the audience that will be impacted.
  • Team: For changes that affect your direct team, share in your group Slack channel
  • Department: If the update affects your department, share the MR in your department Slack channel
  • Company: If the update affects all (or the majority of) GitLab team members, post an update in #whats-happening-at-gitlab linking to this MR
    • For high-priority company-wide announcements work with the internal communications team to post the update in #company-fyi and align on a plan to circulate in additional channels like the "While You Were Iterating" Newsletter

---

content/handbook/support/workflows/cmoc_workflows.md

@@ -224,9 +224,16 @@ The CMOC now needs to notify internal stakeholders of the incident using the Inc
 This workflow, once used, will ask you to fill out a form with details of the incident and will then post those details to `#developer-relations` and `#customer-success`. This serves to notify those teams of the incident. To engage the workflow:
 
 1. Within the `#support_gitlab-com` channel, type `/` in the message box to bring up the list of available workflows and select the `Incident Notifier` workflow.
-1. Fill in all of the details.
+1. Fill in the following details that are shared in the #incident-management channel
+   - **Summary**: Brief summary, you can make it the same as the CMOC notice.
+   - **Severity**: Select the same severity as the Incident.
+   - **Production issue**: Link to the incident issue. eg: `https://gitlab.com/gitlab-com/gl-infra/production/-/issues/12345`
+   - **Incident Slack Channel**: Link to the incident slack channel. eg: `#incident-12345`
+   - **Status Page**: Click on the incident to expland the full status page url. eg: `https://status.gitlab.com/pages/incident/xxxxxxxx/xxxxxxxx`
 1. Click `Submit`
 
+This will sumbit to both `#developer-relations` and `#customer-success` channels.
+
 #### Label Incident Issue
 
 1. Add the `~Incident-Comms::Status-Page` scoped label to the incident issue.