Please refer to here for a simple “How to use widget”. » How to use Dashboard Widgets
Installing additional widgets
① In the left column, “Categories of widgets” are displayed. ② In the middle, “Featured Downloads” is displayed. ③ “Latest Widgets” is displayed on the right. ④ “Staff Recommendations” is displayed at the bottom. ⑤ You can download the widget by clicking “Download”.
Please refer to here for how to handle downloaded files. » Mac - Permission to run downloaded applications