You can change position by moving the map, choosing a new region, or going to your current position.
Moving the Map
Use your finger to move the map around. Use two fingers to zoom in or zoom out of the map.
1) Tap on the region at the top of the map.
2) Your current region is shown with a green checkmark. Tap on any other region to view that region instead.
1) Tap on the Current Position button.
2) The map will take you to your current location.