diff --git a/.github/workflows/add_owner_to_app_registration.yaml b/.github/workflows/add_owner_to_app_registration.yaml
index c5140d0..767f2fa 100644
--- a/.github/workflows/add_owner_to_app_registration.yaml
+++ b/.github/workflows/add_owner_to_app_registration.yaml
@@ -40,15 +40,14 @@ jobs:
       
       - name: Terraform show
         run:  terraform show "plan.out"
-        
+
       - name: Terraform Apply
         run: |
           ls -la 
           terraform apply --auto-approve "plan.out"
       
       - name: Owners added for App registration
-        run: 
-          echo "App registration owners - ${{ inputs.app_registration_owners }}"
-          # Add more steps for applying the Terraform plan
+        run: echo "App registration owners - ${{ github.event.inputs.app_registration_owners }}"
+
       - name: Process Completed
         run: echo "Completed...."
\ No newline at end of file
diff --git a/README.md b/README.md
index 958728f..905da47 100644
--- a/README.md
+++ b/README.md
@@ -27,3 +27,35 @@ add owners to azure app registrations from github workflow
 * We wont be able to add same owner multiple times
 * Azure active directory user shuld have a proper mail id available
   
+# How to run as a github workflow
+
+1. Go to your cloned repo and then to actions tab
+
+    ![alt text](workflow.png)
+2. Choose the workflow `add_owner_to_app_registration.yaml` on left side
+   
+3. Next click on `Run Workflow` and enter the input parameters required
+   
+    ![alt text](github_workflow_inputs.jpeg)
+
+4. Click on `Run Workflow`
+
+5. After the job is completedd, The owners will be added to app registration
+
+# Credentials needed
+
+**authentication to azure is done using service principal**
+
+```
+env:
+    ARM_CLIENT_ID: ${{ secrets.OWNER_SP_APP_ID }}
+    ARM_CLIENT_SECRET: ${{ secrets.OWNER_SP_APP_SECRET }}
+    ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
+    ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+```
+
+`ARM_CLIENT_ID`, `ARM_CLIENT_SECRET`, `ARM_TENANT_ID`, `ARM_SUBSCRIPTION_ID` are required Environment variables.
+
+I used Github secrets on the workflow for authentication.
+
+#### Refer [configuring-the-service-principal-in-terraform](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/guides/service_principal_client_secret#configuring-the-service-principal-in-terraform)
\ No newline at end of file
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