Cosmic Service Solutions has three branches in the role hierarchy for the three regions in the United States where it provides support services to other companies. The organization-wide default sharing setting of the Case object has been set to 'Private'. When working on case resolution, the support agents in the western branch should be able to collaborate by sharing case records with the support agents in the central branch of the hierarchy. No other users in the company, including the managers, should be able to gain access to these records. What can a Salesforce Architect recommend to meet this requirement?Choose 1 answer.