1. Place the mouse where it needs to be enlarged or reduced, and roll the mouse wheel, and the map will be centered on the point where the mouse is located. Scroll the wheel up to enlarge the map, and scroll the wheel down to reduce the map.

2. Click the level zoom bar in the upper right corner of the map, click the+sign to enlarge the map, and click the-sign to reduce the map.

3. Drag the level zoom bar in the upper right corner of the map directly to zoom in and out of the map, and the center point is the center point of the current map.