According to the SAP Service Cloud Version 2 documents and learning resources, you can use the following options to automatically assign an employee or team to a case:
Set up rule(s) for case routing to employees. You can configure case routing rules to assign cases to specific employees based on various attributes of the case, such as subject, priority, channel, or category. You can also use master data such as account, contact, product, or organization as attributes for case routing rules. You can maintain case routing rules for employees in the Settings > Cases > Case Routing to Employees view.
Set up rule(s) for case routing to teams. You can also configure case routing rules to assign cases to teams based on the same attributes as for employees. You can maintain case routing rules for teams in the Settings > Cases > Case Routing to Team view.
The other options are not correct because:
Define case types and assign responsible teams and employees. You can define case types to model different types of service workflows based on your business processes. You can add phases, steps, approvals, and automated flows to each case type. However, defining case types and assigning responsible teams and employees does not automatically assign an employee or team to a case. You still need to set up case routing rules to do that.
Set up rules with BRF+. BRF+ is a tool that allows you to create and maintain business rules in a graphical user interface. You can use BRF+ to define complex rules for various scenarios, such as pricing, output management, or workflow. However, BRF+ is not used to automatically assign an employee or team to a case in SAP Service Cloud Version 2. You need to use case routing rules for that purpose. References = Configuring Case Routing Rules, Creating a Case Type, Business Rule Framework plus (BRFplus)

To integrate external systems into Agent Desktop, you need to have SAP Event Mesh and SAP Cloud Integration as prerequisites. SAP Event Mesh is a cloud-based event bus that enables applications to communicate with each other using events. SAP Cloud Integration is a cloud-based integration platform that allows you to connect your applications with other SAP and non-SAP cloud and on-premise applications.
These components enable you to create mashups that integrate external system functions into Agent Desktop, such as creating service orders and service quotations in SAP S/4HANA or SAP S/4HANA Cloud Service Management. References = Integrate External SAP Systems into Agent Desktop with Mashups | SAP Help Portal, Introducing Agent Desktop in SAP Service Cloud Version 2 - openSAP Microlearning

To control the access rights of a user, you can use the following options:
Assign employee to organizational unit: By assigning an employee to an organizational unit, you can define the scope and responsibility of the user within the organizational structure. The organizational unit determines the access rights of the user to the data and transactions related to that unit, such as cases, service orders, contracts, and products. For example, you can assign a service agent to a specific service team or region, and restrict their access to the cases assigned to that team or region.
Assign restriction rules: By assigning restriction rules to a business role, you can further limit the access rights of the user to the data and transactions based on certain criteria, such as status, priority, category, or territory. Restriction rules can be applied to read and write access, and can be defined for different business objects, such as cases, service orders, contracts, and products. For example, you can assign a restriction rule to a business role that allows the user to read only the cases with high priority, or to write only the cases with open status.
References = Setting up user access rights and restrictions, Org Structure To control the access rights of a user in SAP Service Cloud Version 2, one can "Assign an employee to an organizational unit," which sets the user's access level based on their role within the organizational structure.
This ensures that users have access only to the information and functions relevant to their position. Another method is to "Assign restriction rules," which allows for the specification of detailed access controls based on various criteria, further refining what users can see and do within the system, ensuring data security and compliance with business policies.

To create a New product in SAP Service Cloud Version 2, you need to specify the product group and the unit of measure as mandatory elements. The product group defines the category of the product and the unit of measure defines the quantity of the product. Sales area data and price are optional elements that can be added later or maintained in other systems. References = Solution Guide for SAP Service Cloud Version 2, page 88,
[Create Products | SAP Help Portal]

In SAP Service Cloud Version 2, when a new case type is created and activated without assigning a service catalog, the recommended approach to address this oversight is to utilize the "Create New Version" action.
This action allows administrators to create a new iteration of the existing case type, wherein the necessary service catalog can be assigned. Following the assignment of the service catalog, this new version of the case type can then be activated, effectively updating the case type configuration to include the previously omitted service catalog. This process ensures that the case type is correctly configured with all required components, including the service catalog, without the need to deactivate or delete the original case type