Tap + hold on the widget, then select Edit Widget. This will reveal options to customize your widget to your needs.
All widgets are available to install on a Mac with OS 14.0 or later.
Right-click or command-click on your desktop and select Edit Widgets. Choose widgets to add and arrange on your desktop.
Edit a Mac Widget
Right-click or command-click on a widget and select Edit Widget to change
The Weather, Habits, Vibes, and Timer apps support widgets. At this time there is no widget for the Calculator app.