Customer Community Plus is a type of Community license that should be used to meet the requirements of allowing customers to submit cases and see a dashboard of case resolution history. Customer Community Plus licenses are used for external users who access Experience Cloud sites and need to access standard CRM functionality, such as creating and managing cases, viewing reports and dashboards, or collaborating with other users. Customer Community Plus licenses are based on the number of named users and are suitable for frequent or high-value customers who need full access to Service Cloud features. Verified Reference: Service Cloud Consultant Certification Guide & Tips, Experience Cloud User Licenses

For Universal Containers to report on trends in Knowledge Searching, User Activity, and Data Category Usage, installing the Knowledge Base Reports and Dashboard package is recommended. This package provides pre-built reports and dashboards specifically designed for analyzing Knowledge usage and performance, enabling UC's analytics team to gain insights into Knowledge program effectiveness.

The Lightning Service Console is a user interface that allows you to manage multiple records on one screen and quickly access important information. You can use tabs and subtabs to organize your records and switch between them easily. To meet the requirement of viewing the case history of other cases for the same account when viewing a case, you can use account tabs with case subtabs. This means that you open an account record as a primary tab and then open related cases as subtabs under that account tab. This way, you can see all the cases for that account on one screen and compare their case histories. Verified Reference: [Tabs and Subtabs in Lightning Console Apps]