How can I create an animation where the operator picks up a trolley from one location, moves to a second location to load the first part from first conveyor onto the trolley, then moves to a third location to load the second part from secnd near by conveyor, and finally moves to a fourth location to a combiner, where both parts are combined and loaded onto a conveyor? Is it possible to achieve this without using a process flow, or if a process flow is required, how should I approach it?