To add a location on the map, you first need to have a "place" with an address.
Here's how to do that:
Once the place is created, you will see the address form field by scrolling your mouse over the place and then press "view".
Next, you will see this on the right-hand side of your screen:
If the address is correct, you can leave it how it is. If you would like to change the address manually, press the text "Edit Address Manually".
In there, you can edit the address or add the latitude and longitude. You can also move the green pin within the map to pinpoint the destination without typing in the address or latitude/longitude.
Once completed, press Done .