Your organization has recently acquired Company A, which has its own SOC and security tooling. You have already configured ingestion of Company A's security telemetry and migrated their detection rules to Google Security Operations (SecOps). You now need to enable Company A's analysts to work their cases in Google SecOps. You need to ensure that Company A's analysts: do not have access to any case data originating from outside of Company A. are able to re-purpose playbooks previously developed by your organization's employees.
You need to minimize effort to implement your solution. What is the first step you should take?