1. Navigate to Jenkins dashboard > click on the development project

2. Click the hello-world-jk job

And click Configure button on the left side

3. For polling a Github SCM configuration, go to Build Triggers section, select the Poll SCM. Enter * * * * * for the SCM schedule which means the Jenkins polls the SCM every minute

4. Click Save to save this project

5. Click Build Now to start a new build

6. Click on the Build History > Console Output to observe the result