DOCSP-43042-service-account-not-explained (#1928)

* DOCSP-43042-service-account-not-explained

* subsitution

Author: gmiller-mdb

source/tutorial/set-scope-k8s-operator.txt

@@ -87,6 +87,17 @@ deployed:
    in the default configuration files that you apply during the
    installation.
 
+3. Create local |k8s| `ServiceAccounts <https://kubernetes.io/docs/concepts/security/service-accounts/>`__:
+
+   For each namespace, create some or all of the following local |k8s| 
+   ServiceAccounts:
+
+   - If you want to deploy a MongoDB instance in the namespace, use
+     ``mongodb-enterprise-database-pods``. 
+
+   - If you want to deploy |onprem| in the namespace, use 
+     ``mongodb-enterprise-appdb`` and ``mongodb-enterprise-ops-manager``. 
+
 The following example illustrates how the |k8s-cr| and |k8s-crb| work
 together in the cluster.