The Deployment Tab is not mandatory but you can use it to see the deployed units.
In order to test the HR project now you need to build it and deploy it. IN order to do that you need to:
1) Go inside the HR directory
2) In the Tools menu choose Project Editor
3) When the project editor is active you can choose Build & Deploy
4) [Optional] you can monitor that it was deployed correctly in the Deployment Tab
5) You will see the Hiring a new developer process in the Process Definition List
Cheers
PS: Please use the User Forum and not the dev list