From a watch face, swipe to the Quick Add panel.
Tap the Plus icon.
From here you can select a widget to add to your watch.
Select a widget.
To remove the widget, press and hold it.
Tap the Minus icon.
This doesn't delete the widget from your watch. You will still be able to add it again later without needing to redownload it, so long as its associated app is still installed.
You've completed the steps!
