Dashlets can be customized by each user.  The "Add Dashlets" button on the home page will take the user to the dashlets management page.  On the management page, dashlets can be added, removed and disabled.

On the dashlets management page, the "Add Dashlets" button will present a popup where the user can select the available dashlets. By convention, dashlets that start with "My" are dashlets that only display data for the current user.