When you create a Meeting or an Event in your calendar you'll see in the Event Editor that you have the option to add links to your Event. You can add up to three links to your Events. If you're looking to add a location or a map to your event, you can add it as a link in the Event Editor. 

First, you'll need to have the address for your event. Then you can open the event that you want to add a location to  and follow the steps in the image below:

After you click on the green "OK" button be sure to click on the green "Save Event" button to save the changes to your Event.