Have you discovered that task state changes can trigger new functionality in Zegeba v 3.29? You can now for instance specify that some users will be unassigned from a task and others assigned when a specific state has been reached. Or you can remove all users when the task state Completed is reached. You can also set up email notifications to be sent for a specific task state – for instance just to say that a task is now ready for approval. Read about the setup of this functionality in Managing: 6.2 Adding Task States for a task template.