Generally, locations can be added via Settings > Locations. Those locations can be chosen by every co-worker when setting up a meeting. Yet, it can happen that you need to put in a different departure address. How you can do this is described below.
If you click on the meeting itself, you see under meeting info the location and an estimated travel time. Next to it, there is a pencil.
By clicking on this pencil, you can not only edit your departure address but you can also set one as your new default departure address.
Customer support service by UserEcho