More flexibility on charging stations during route planning

I’m new to the app, though I have signed up for premium. I’ve done a bunch of route plannings and I’ve not been able to do one thing that I think it pretty important - select when in my route I want to charge. For example, I want to make a round trip to the airport to pick up friends. The route planner wants me to stop and charge before arriving at the airport but I want to do so afterwards. I’ve been experimenting (using the web interface) and I just can’t seem to get a route that does what I want.