+**Step 4.** Install Cert-Manager::
+
+ > kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.2.0/cert-manager.yaml
+
+More details can be found :doc:`here <oom_setup_paas>`.
+
+**Step 5.** Customize the Helm charts like `oom/kubernetes/onap/values.yaml` or