[Internal]: Add time range filters in all cases view

[christineweng]

Description

With elastic/kibana#243409, user will be able to filter cases by selecting a time range. A custom quick add called "Show all cases" is available for users to see all cases as before. Default is last 30 days.

Impacted docs and screenshots

Note to self: Consider ways to single-source or generalize the impacted images and content.

• Update the intro of the Manage existing cases section:
  • Security - https://www.elastic.co/docs/solutions/security/investigate/open-manage-cases#cases-ui-manage
  • Observability - https://www.elastic.co/docs/solutions/observability/incident-management/create-manage-cases#observability-create-a-new-case-manage-existing-cases
  • Kibana - https://www.elastic.co/docs/explore-analyze/alerts-cases/cases/manage-cases#manage-case
• Refresh the following screenshots:
  • Security
    • security-cases-home-page.png
    • security-add-alert-to-existing-case.png
  • Observability
    • observability-cases.png
  • Kibana
    • kibana-cases-list.png

Resources

PR: elastic/kibana#243409

Targeting 9.3 and serverless

Which documentation set does this change impact?

Elastic On-Prem and Cloud (all)

Feature differences

No difference

What release is this request related to?

N/A

Serverless release

Monday December 1 8, 2025

Collaboration model

The documentation team

Point of contact.

Main contact: @christineweng

Stakeholders: @melissaburpo

[christineweng]

Updated screenshot to reflect an additional custom quick select Last 30 days, this allows user to go back to the default last 30 days option quickly.