Select your begin or end point on the map
Do you not know the address of your begin or end point? Or does the place not have an address, like a park? Select your begin or end point on the map.

Tap 'From: Address, station, postcode, etc.' or 'To: Address, station, postcode, etc.'.
Tap 'Choose a location on the map'.
Enter the city name of the place where the location is located.
Place the pin on the location of your choice on the map.
Tap 'Select'.
Have a nice trip!