Just press the center of the screen or turn the wheel of your Samsung Gear watch to create a timer. This will open the timer creation menu.
The timer time is displayed on the left side. Turn the wheel to change the time. Tap this left button to activate the timer.
Top button is used to activate or disable the repeat mode. When repeat mode is ON, the timer is a periodic timer.
Bottom button is used to activate or disable the callouts. The app generates alarms before the timer is over.
Finally, the right button is used to select one of the 7 predefined modes.