To add more waypoints to your route after the first one has been added, do the following:
Tip: If your device supports Voice control, you also speak commands to add waypoints.
A message tells you where in the list of waypoints the new one has been inserted.
On the route summary screen, a message confirms that the route is being recalculated to include your waypoints.
On the Change route menu, the Travel via button changes to show that you now have several waypoints on your current route.
Note: All waypoints are added initially as waypoints with notification.