Samsung Galaxy S8 / S8+ - Add Widgets to Home Screen
Widgets are mini-apps (e.g., weather, clock, calendar, etc.) that can be added to a Home screen. They aren't the same as shortcuts as they generally display info and take up more space than a single icon.
Touch and hold an empty area on a Home screen.
Tap Widgets (located at the bottom).
Touch and hold a widget then drag to the preferred Home screen.
For the widget to be successfully added, there must be sufficient space within the selected screen.
If applicable, select additional options to activate widget.
Options vary depending upon the type of widget.