For G Suite.
How do I set up G Suite in order to allow only specific member/group to use Email Archive?
Step 1 - In the "Google Admin Console", go to "Users" interface.
Step 2 - In the "Users", Click on "Add sub organization" as shown as below:
Step 3 - Input the desired name for the organization. Click "CREATE ORGANIZATION" to complete to creation.
Step 4 - After the organization is created, select the users you want by checking the box beside the user's name. Then, click on the "Move to another organization" icon as shown as below:
Step 5 - Select the Organization that you have just created.
Step 6 - Click "CONFIRM".
Step 7 - After the Organization is successfully created, go back to the "Apps" interface, click on "G Suite".
Step 8 - In the G Suite interface, click on "Gmail".
Step 9 - In the "Settings for Gmail", click on "Advanced settings".
Step 10 - In the "General Settings" tab, in the "ORGANIZATIONS" sidebar, click on "Specific Organization".
Note: Please only make changes to the "Specific Organization" settings for the rest of the setup.
Step 11 - Please continue the Step 1 in "3) Receiving Routing Settings" in the Setting Up HDE Email Archive (G Suite).