So I have a trip with a few waypoints and I want to take roads other than those selected when the route was automatically planned. I am used to simply being able to select and drag the route, but I could figure out how to do this (hopefully I am missing something basic). I could create a bunch of waypoints to force it down a particular route, but that seems like a lot of unnecessary work.
If I understand your well...
You can drag the routeline in Google Maps, when you loose the routeline, add the system a waypoint on that location.
This is only working in the Google Maps mode.