Status tracking via Button

Implement tracking status functionality. For example, When staff completed a record - he/she will then click on the Complete button to update the status. Then a record need to be checked twice from a Proof Reading Team. If StaffB finish proof reading then another member from Proof Reading Team need to check it again. I have done simple database design, you will just need to make it work in PHP and Ajax jQuery. You just need to work on the status functionality (button) only.. **Status Example:** click on "DataEntry Start Processing" will then show "DataEntry Completed" Only ProofReading Team can see "ProofReading Processing" button if DataEntry status is completed. I will explain more in Private Message. Thanks.