Microsoft released the following diagrams on TechNet: Time and task progress workflow diagrams (Project Server 2010). The following diagrams illustrates the workflow for entering, submitting, and approving time and task progress using a single view, separate views, through a delegate, after a time reporting period has closed, or after a task has been locked from updating.
Microsoft Project Web App enables you to easily track the time you spend on a project’s tasks, and the progress of those tasks toward completion. In the version of Project Web App that’s included with Project Server 2010, you can enter time and task progress using the same view, or using separate views. You can also assign someone else to enter and submit your time and task progress information on your behalf. This person is called a “delegate.”
For viso, and xps version, visit here.