Is there a way to plot drone delivery routes? For example here s the situation - i use Battery Powered mod to power my railway via reusable batteries. I d like to setup train refueling in such a way, that drones bring in fresh batteries for trains from a specific recharging area and similarly take the spent batteries back there to be recharged.

What currently happens, is that if i set a request for spent batteries at recharging area, drones get them from everywhere around the base, including my main storage space, instead of train depots. Maybe i am overlooking some way to set them up?