The Omni-Channel Supervisor tab is a feature that allows managers to see which service representatives have not accepted new cases recently using the Lightning Service Console. It provides real-time data on the status, capacity, workload, and performance of agents and queues. Verified References: : https://help.salesforce.com/s
/articleView?id=sf.omnichannel_supervisor_tab.htm&type=5 : https://help.salesforce.com/s/articleView?
id=sf.omnichannel_supervisor_monitor_agents.htm&type=5

On-Demand Email-to-Case and Web-to-Case forms are features that a consultant should suggest to reduce the amount of time support agents spend creating cases. Case creation must scale up to 5000 new cases per day, as well as allowing file attachments under 25 MB by the customer. These features can help automate the case creation process from email or web sources, as well as support file attachments. For example:
* On-Demand Email-to-Case is a feature that allows you to convert customer emails into cases without installing an agent in your network. On-Demand Email-to-Case can handle up to 5000 new cases per day, and can also accept file attachments up to 25 MB in size. On-Demand Email-to-Case can help reduce the manual work of creating cases from emails, as well as preserve the email formatting and headers.
* Web-to-Case forms are forms that you can embed on your website to allow customers to submit cases directly to Salesforce. Web-to-Case forms can handle up to 5000 new cases per day, and can also accept file attachments up to 25 MB in size. Web-to-Case forms can help capture customer information and issues from your website, as well as reduce the email and phone traffic to your support team.
Verified References: Service Cloud Consultant Certification Guide & Tips, Set Up On-Demand Email-to- Case, [Set Up Web-to-Case]

The History tab on the Actions & Recommendations component is a feature that service agents can use to review the actions they have taken on a case, such as applying macros, sending emails, or updating fields. The History tab also shows the outcome of each action, such as success, failure, or partial success. This helps agents keep track of their progress and troubleshoot any issues. Verified References: : Review Your Actions History

Omni-channel Supervisor is a feature that allows managers to monitor the performance and activity of agents and queues in real time. Managers can view metrics such as agent status, workload, capacity, and chat transcripts. Managers can also provide real-time feedback to agents during customer chat sessions by sending private messages or coaching requests. Verified References: Service Cloud Consultant Certification Guide & Tips, Omni-Channel Supervisor Overview

Configuring the new app in a sandbox and using a change-set to push the configuration to production for testing and training is a recommended way to mitigate the concerns of disrupting current operations and impacting customer satisfaction. A sandbox is a copy of the production environment that can be used for development, testing, or training purposes without affecting the live data or users. A change-set is a collection of metadata components that can be deployed from one Salesforce org to another. By using these tools, Universal Containers can ensure that the new app is working as expected and that the agents are familiar with it before making it available in production. Verified References: Service Cloud Consultant Certification Guide
& Tips, Sandbox Overview, Change Sets Overview