Truck transport route: multiple pick-up and/ or delivery targets with a single trip

Example:
There are 2 vegetable farms, each with 29 stored vegetables.
Now one truck (capacity 60) is assigned to a vegetable warehouse. Now it would be nice if the truck could pick up the vegetables from both farms in a single trip, so that all 58 vegetables are stored in the warehouse at once.

At the moment, a separate trip is made for each farm, which is not very efficient. Especially when the farms are right next to each other (on the same route, so to speak)