At the bottom of the Geo-Fence map there are two icons. These can be used for navigating the map and creating geo-fences.
Hand Icon: Use this icon to navigate the map. Click to grab a position on the map and drag the map to navigate to the desired area.
Polygon Icon: Click on the Polygon icon to create a geo-fence. Once this icon is clicked, the mouse will act as a shape-drawing tool. Click on specific locations of the map to create points that will act as intersections for the lines of the desired shape.