combine profiles in single route

In basecamp I was able to realise an off-road section in a normal, street following. routing route.
This could be done by finishing the route with normal routing option adn then switching temporarily to "direct" routing and modify the relevant section to go offroad as required.
I've used it for real off road sections but also to navigate across map-glitches.

This same trick in BC, switching the profiles, does not work.
Is there another way to get a direct section in a route with a different profile?