Optimise for fastest leg or waypoint on multi-leg routes

When planning a route with one or more intermediate waypoints it would be great if there was an option to prioritize one leg or the faster arrival at one waypoint in the charge stop planning.

My typical use case is the following:

I often plan round-trip routes to a destination (waypoint a) and back (waypoint b) which are slightly longer than the range of the vehicle. Hence the route planner adds a short (5-10 min) charging stop somewhat close to waypoint a - to my observation preferably before waypoint a.

However, oftentimes I need to get through one leg of the journey as fast as reasonable while I don't have time pressure on the other leg. Up to now I haven't found a way to force the route planner to put the charge stop into that part of the route which is less time critical.

It would be nice if I somehow could tell the route planner to minimize charge stops at a certain leg or between certain waypoints.