Hi,
When you build project schedule and publish it, each resource will be able to view his assignments under Tasks then he can edit an assignment and does changes on it.
What I need to know, is there any way to customize the workflow that controls the assignment lifecycle so that for example if the resource changed the assignment end date I need to generate approval task to his manager and when approved it will generate another approval task for his director and if the director approved the task then the change it get reflected on the schedule otherwise the change will be disregard and the resource will be notified by email.