Add a Location
You can locate the point of interest by clicking on its precise location on the map. Otherwise, click on This is a group of locations below the map.
This second option is used when creating child categories that will have physical coordinates, unlike perhaps their parent category.
For example, you can create a parent category "Building A" that is not located by checking the This is a group of locations box and then add the different points of interest of the building by checking the box.