diff --git a/example/README.md b/example/README.md
index f3e520b..1835b95 100644
--- a/example/README.md
+++ b/example/README.md
@@ -8,8 +8,21 @@
 kubectl apply -f https://github.com/kubedb/postgres-docker/raw/release-11.16-alpine-cron/example/catalog.yaml
 ```
 
-3. Deploy a demo PostgreSQL database.
+3. need to provide `shared_preload_libraries = 'pg_cron'` config inside `postgreSQL` `conf` file to enable pg-corn extension. At first, let’s create a secret with `user.conf` as key and  set `shared_preload_libraries` there.
 
+```
+kubectl apply -f https://github.com/kubedb/postgres-docker/raw/release-11.16-alpine-cron/example/custom-config.yaml
+```
+
+4. Deploy a demo PostgreSQL database.
 ```
 kubectl apply -f https://github.com/kubedb/postgres-docker/raw/release-11.16-alpine-cron/example/demo.yaml
 ```
+
+5. Then We need to create extension for our server. For This we need to exec into primary and create pgcron Extension
+
+```shell
+$ kubectl exec -it -n demo demo-pgcron-0  -- bash
+$ psql
+postgres=# CREATE EXTENSION pg_cron;
+```
\ No newline at end of file
diff --git a/example/custom-config.yaml b/example/custom-config.yaml
new file mode 100644
index 0000000..3a20561
--- /dev/null
+++ b/example/custom-config.yaml
@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: demo
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: postgres-configuration
+  namespace: demo
+stringData:
+  user.conf: |-
+    # ref: https://github.com/citusdata/pg_cron#setting-up-pg_cron
+    # required to load pg_cron background worker on start-up
+    shared_preload_libraries = 'pg_cron'
+    # optionally, specify the database in which the pg_cron background worker should run (defaults to postgres)
+    cron.database_name = 'postgres'
\ No newline at end of file
diff --git a/example/demo.yaml b/example/demo.yaml
index 03ecd6f..d38f991 100644
--- a/example/demo.yaml
+++ b/example/demo.yaml
@@ -11,6 +11,8 @@ metadata:
 spec:
   version: "11.16-alpine-cron"
   replicas: 3
+  configSecret:
+    name: postgres-configuration
   standbyMode: Hot
   storageType: Durable
   storage: