Customer complaints for bad interactions with a customer support agent are logged as Cases and assigned to a human resources representative. The agent of the complaint should not see the case, but their manager should.
How is this accomplished?

At Universal Containers, there's a team of auditors distributed throughout the organization that all need access to high-value opportunities.
With a Private sharing model, which option should an architect recommend when designing a solution for this requirement?

Besides their own team accounts, sales managers at Universal Containers (UC) need Read access to all accounts of the same segment in other countries. Role Hierarchy was implemented accordingly (based on countries), but a sales manager in the U.S. is complaining that he cannot view account records of the same segment in Canad a.
What should UC do to grant access properly?

Which option can be selected to share data when creating a sharing rule?

Universal Containers (UC) has a custom object to track the internal net promoter score (NPS) for all of its employees. The manager is in the role above the owner and there are no sharing rules on the object.
How should UC ensure that NPS records cannot be accessed by the owner's manager?