These two options are chosen in your Watch Settings.
When Auto-pause is turned on, your activity in the dwMap watch app will be automatically paused when you stop, and resumed when you start moving again.
The auto-pause speed threshold is 1.0 kmh (0.62 mph).
When Auto-lap is turned on, a lap/split will be created in your activity each time a certain distance is completed. You can chose from a number of common distances. The lap/splits can be viewed in your watch's History app, or on the Garmin Connect website.