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One way to restrict an OCI user is to allow them to work with resources in one or more OCI Compartments only.
For information about OCI compartments and their use cases, see https://docs.oracle.com/en-us/iaas/Content/GSG/Concepts/settinguptenancy.htm#four
For more details about how to manage compartments, see https://docs.oracle.com/en-us/iaas/Content/Identity/Tasks/managingcompartments.htm.
For a quick description of the policy for restricting user compartments, see https://docs.oracle.com/en-us/iaas/Content/Identity/Concepts/commonpolicies.htm#compartment-admin-manage-compartment.
(You can add the policy in Identity → Policies).
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OCI billing dashboard
To enable an OCI user to use the billing dashboard, assign the OCI user a policy with access to cost and usage data.
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