Computer method and apparatus manage requests to make changes to a given software system (e.g., application program or program portion). The invention method and apparatus form a change request object representing a user's request to make a change to the given software system. The invention method and apparatus form one or more hierarchies of objects and sub-objects to represent work to be performed and work performed in making the requested change. One embodiment creates a root issue object for each change request object and allows a user to partition an issue object into issue sub-objects. The embodiment (a) allows a user to create a task object to define the work needed to address an issue and allows a user to partition a task object into task sub-objects, and (b) allows a user to create an activity object to track work performed and allows a user to partition an activity object into activity sub-objects. Issue objects and issue sub-objects are relatable to task objects and task sub-objects. Task objects and task sub-objects are relatable to activity objects and activity sub-objects. State of an object is determined based on the status of each of its related objects and sub-objects.