TOr for building a web application

Before application of a change, both the Change Approver and an Elevated User of the dept. must validate the change. Anyone can be a Change Originator and open a new ticket (request); from the simple user to the Change approver. User can only see request send by themselves. Elevated Users can see all request send by their dept. Change Owners (IT Officer) can see all requests send to the help desk. Change approver can manage all requests, delete, or modify Admin has fully control of the system. Anyone can update a request but the system must keep track of the update.