You could try manually re-ordering the items in the meltano.yml file. That might change the display order in UI (although I'm not 100% sure) but I don't think that would have any affect on execution. If what you are looking for is to require one pipeline to run before the other, I think the best way to achieve that would be to customize your Airflow dag. I am not aware of a demo or example of that, but in theory you could set one task in your airflow dag to depend on one or more others.