Process flow control (priority)

Hi, I try to control the process flow.

The current flow is for the robot to operate in the order in which empty tasks are completed. But even if it’s delayed, I first need a way to run it with only process #4,5,6.

Of course, I would like to recommend a method of applying the sensing function or WaitSignal to the node.
Thank you in advance
Process Flow.vcmx (477.4 KB)