This is simply set up to do two things - find out your travel time and when to set off for your next meeting and then give you the option for directions.
It will first look ahead for the next 7 days at your calendar events.
You can then choose the event you would like to travel time for.
It will then ask if you where you'd like the to start from (current location or home)
It will then tell you how long it will take you to get to the meeting, and what time you need to leave (factoring in an extra 15 minutes for parking up etc)
You will then have the option to get directions using maps.
A few of things you need to do to set this up.
1. Choose the calendar your events are in.
2. Input your home address
3. Choose your desired app to get directions in if you odn't want to use maps.