Sequence of Operations by Human

Hello,

I have 3 different machines and Machines have individual Manual and Automatic tasks. Only one operator is working on these 3 machines. I have assigned tasks to Human(Operator), but Human is not working as per the sequence of operations. So, can anyone suggest how to give a proper instruction to human so that machine operations will be as per the sequence.

Could you attach a simple example layout and describe what you’d like to see happening in that specific layout.