Not today. Do what you are doing and navigate to your final destination, look at the route, find your desired supercharger pit stop, and click it to navigate to the desired supercharger. Then while sitting there charging just use your history to choose the final destination. I’ve heard pit stops are on the roadmap so hopefully this changes.
BTW, you can do all this planning and more at home with abetterrouteplanner.com. There are a few others as well.