The My Tasks section on the dashboard is specific to whoever is logged in; all tasks assigned to whoever is logged in appear in these subsections: My Review, Open Tasks, Unread Messages, and To Do Tasks
My Review tracks all tasks that have been completed by your clients; once you have reviewed these tasks and marked them as completed, the tasks will move from here to Archived in the Tasks page.
Open Tasks tracks all tasks that have been sent to your clients but are not yet completed. After a client completes their task(s), the task(s) move to My Review.
Unread Messages tracks all unread messages sent to whoever is logged in. These messages can be stand-alone messages or a part of the messaging thread on a particular task.
To Do Tasks tracks all To Do Tasks that are either assigned to whoever is logged in or owned by whomever is logged in.