1. Pinch on the desktop with two fingers to enter the desktop editing state.
2. Click on the window widget and slide left to view all widgets.
3. Some widgets (such as weather) will have multiple styles. Click the icon to expand all styles, and slide to the right to collapse them.
4. Click the desired gadget icon to add it to the current screen. If there is no space on the current screen, you can long pre ss and drag the icon to add it to other screens.