Major Incident Workbench - How does Compose populate recipients?

[Sirri]

Hi Team,

I am trying to understand the OOB functionality of Major Incident Management.

Scenario

1. Incident is promoted using "Promote to Major Incident" UI Action.
2. After promotion, we click "View Workbench".
3. Workbench opens using:
   
   $major_incident_workbench.do?sysparm_sys_id=<Major Incident Sys ID>

   1. Under the Communicate tab, we see communication tasks such as:

      • Initial Communication
      • Ongoing Communication
      • Resolved Communication

   2. When clicking Compose on the Ongoing Communication task:

      • A communication popup opens.
      • CC recipients are automatically populated.
      • Subject is automatically generated.
      • Email body/template is automatically populated.

   3. When clicking Send, an email is generated and a sys_email record is created.

   What I am trying to understand

   1. Which OOB component handles the Compose action?

      • UI Page
      • UI Macro
      • UX Component
      • Script Include
      • Communication Task configuration

   2. How are the CC recipients determined and populated automatically?

   3. Where is the logic for generating the Subject?

   4. Where is the HTML Email Body Template stored?

   5. Are these values coming from:

      • Communication Plan
      • Communication Task
      • Notification
      • Email Template
      • Stakeholder configuration
      • Distribution List

   6. What is the best way to trace this functionality end-to-end?

   Findings so far

   • Workbench is opened from the View Workbench UI Action.
   • Email generated from Compose creates a sys_email record.
   • In the generated email record, CC recipients, subject, and body are already populated before sending.

   Could anyone point me to the tables, records, or OOB components responsible for this functionality?
   Please find the attached Document for reference.

   Thanks in advance.