Within each project you can create an outline of major deliverables with Work Items. The intent of Work Items is to clearly define the project deliverables, expectations and responsibilities on the project, specific phase(s), or people. Work Items are dependent on assignments, so if you add a Work Item to a person's project assignment, these details appear on the Today View of their Personal Page.
You can use Work Items at a high-level to describe the work that should get done on the project, or to specific phases. By assigning Work Items to project assignments, you are describing the work that should get done during that assignment.
How to Add Work Items
On the Project Schedule: you have the ability to add unassigned work (at the project or phase-level) or add work to an existing team member's assignment. Read here on how to add work to the Schedule.
On the Project Worklist: similar to the Schedule, you can add unassigned work (at the project or phase-level) or add work to an existing team member's assignment. Read here on how to add work to the Worklist.