Ensure serial child pipeline execution

[kmiesse]

On the Pipeline Execute snap, if I have the Reuse checkbox unchecked and the pool size =1, does that ensure the executions of the child pipelines are serial and not parallel? I want to ensure only one instance of the child pipeline is running at any time and that one execution completes before another begins.

[kzaiger]

What is the best way to ensure order of processing, e.g. pipeline a always starts and ends before pipeline b starts?

[nganapathiraju]

Place them in pipeline executes one after the other.