Hey, colleagues, is everything all right?

I need to improve the flow in a production cell. The flow should look like this: There are two product references in the first workbench. A worker has to pick up some parts from the first product reference in the first workbench, and then place the parts on the workbench near the machine. After that, the worker must to set up the machine setup for this product, transform the parts one by one in the machine and return the new parts to the workbench near the machine. Then he needs to restart this cycle with the second product reference.

What I need to do, but I did not like, is to use a delay time in the second product reference buffer to separate the first product flow from the second product flow. There is one more thing wrong in my scenario: the worker does not set up the machine setup of the first product, because I use the "Periodic Actions" to solve this problem.

I need to solve these things properly. Could you please help me?

I have attached a 3DXML with this scenario. 

Lucas