Question - Dashboard

I will try to make the Dashboard so specific to the user logged in as possible. When I see my task on the Dashboard, I would like to see only my task where I have something to do. An audit, Maintenance or review. For now I also see the tasks where I am collaborator or service owner. How do I change the task overview to only show me really task. (I have no visualization on this user group)

is not possible ,you see what relates to you and that might include more than one person