You can add a waypoint to your route even during navigation. There are three different ways:
1. Places on route: Tap one of the suggested POIs under the signpost or choose another POI from the “more POIs” button.
2. Update the itinerary: Go to Route preview (bottom info panel) – Route options (bottom right corner) – Add waypoint (itinerary) – You can search for an address or select directly from the map.
3. From the map: Browse the map by swiping, then select a POI or place and choose “Add as a waypoint”.