Thats where the custom software comes in - you can program a robot to move in a pattern through setting it or through sending coordinates to it (I have done tha

Thats where the custom software comes in - you can program a robot to move in a pattern through setting it or through sending coordinates to it (I have done that as part of a job). You could have software that converts the instructions for the PCB into instructions for the robot to do pick and place.