For reporting on daily call volume including related case and contact information for different agent groups, creating a Custom Report Type with Activities as the primary object is advised. This allows for the inclusion of case and contact details in the report, providing a comprehensive view of each agent's call activity and related case interactions.

The dashboard viewer is the recommended running user to meet the requirements of standardizing the service KPIs for response time and first case closure rates. The dashboard viewer is a setting that allows the dashboard to display data according to the security settings of the user who is viewing it. This means that each user will see the same KPIs calculated using only the data they can access. Verified Reference: : https://help.salesforce.com/s/articleView?id=sf.dashboards_running_user.htm&type=5 : https://help.salesforce.com/s/articleView?id=sf.dashboards_dynamic.htm&type=5

Incident Management is the recommended feature to meet the requirements, because it allows UMS to create incidents that represent service disruptions or outages, and link them to related cases and work orders. Incident Management also enables UMS to communicate with customers and internal teams about the incident status, impact, and resolution through email templates, chatter posts, and web pages. Verified Reference: : Incident Management Overview

Milestones can be added to work orders, cases, and entitlements in Salesforce. Work orders are records that track service requests for customers. Cases are records that track customer issues or inquiries. Entitlements are units of customer support that specify what kind of support a customer is eligible for. You can use milestones to define the required steps and time limits for resolving work orders, cases, and entitlements. Verified Reference: Milestones: Supported Objects