https://support.google.com/a/users/answer/9310249#1.2
https://support.google.com/a/answer/9935192?hl=en#:~:text=a%20target%20audience-,Create%20a%20target%20audience,as%20Google%20Drive%2C%20to%20make%20it%20available%20in%20users%27%20sharing%20settings.,-Before%20you%20begin
https://support.google.com/a/answer/9934697?hl=en

Reference: https://gsuite.google.com/products/vault/

* Access Google Vault: Go to Google Vault.
* Create a Matter: Create a new matter in Google Vault for the legal query.
* Search for Data: Use the search functionality to query the required data across multiple user accounts based on the legal department's requirements.
* Run Export: After verifying the search results, run an export of the data to an MBOX file format.
* Share Export: Provide the exported MBOX file to the legal department for their eDiscovery process.
References:
* Google Vault Help - Create and Manage Matters
* Google Vault Help - Export Search Results

https://support.google.com/drive/answer/9195194?hl=en#:~:text=Share%20with%20visitors,with%20one%20visitor.

* Organizational Units (OUs): Ensure that each sales team (Madrid, Tokyo, London, New York) is organized into their own Organizational Units (OUs) within Google Workspace. This helps in applying specific settings to each group individually.
* Navigate to Admin Console: Go to the Google Admin console (admin.google.com) and sign in with
* your administrator account.
* Access Gmail Settings: In the Admin console, go to Apps > Google Workspace > Gmail > Compliance.
* Configure Append Footer:
* Click on "Add another rule" under the "Content compliance" section.
* Name the rule appropriately (e.g., Sales Compliance Footer).
* Under the "Email messages to affect" section, select "Outbound" to ensure the rule applies to emails sent by the sales teams.
* In the "Add setting" section, select "Append footer" and enter the footer content. Ensure the footer text is translated according to each locale.
* Footer Content: The footer should include the message: "Should you no longer wish to receive emails about this offer, please reply with UNSUBSCRIBE." Ensure this is translated appropriately for each office's locale.
* Enforce Non-removable Footer: By configuring this at the OU level and using the Append Footer setting in compliance rules, users will not be able to remove this footer from their emails.
* Save and Apply: Save the rule and ensure it is applied to the specific OUs containing the sales teams.
References
* Google Workspace Admin: Set up compliance rules for Gmail
* Google Workspace Admin: Configure email footers