Explanation
To acknowledge cases with a Case Reason of Installation immediately via email and assign them to appropriate agents, and escalate cases that are still in New status after 4hours to support management, an administrator should use Auto-response rules, Queues, and Escalation Rules for case management.
Auto-response rules allow sending automatic email responses to customers based on case criteria. Queues allow grouping cases that share common characteristics and assigning them to a group of users who can access and work on them. Escalation rules allow escalating cases that meet certain criteria to higher-level users or groups and sending email notifications. Macros and Entitlements are not case management tools that can be used for this requirement. References:
https://help.salesforce.com/s/articleView?id=sf.case_autoresponse.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.queues_overview.htm&type=5https://help.salesforce.com/s/articl