The Ooofpa Loopa Finally Strikes

While there was chaos initially, most of the Pandarens quickly took whatever role they needed to fill based on the available 'job' slots in the Pandamonium App. (Like gunners, artillery shell assistants, lookouts, barricade builder, etc) Even without any minions to lead the way, they still had access to the Pandamonium App Map which at least provided them with an interactive map listing all defensive emplacements they could take up. 

Once they took the emplacement position, the Pandamonium App would not only display that their location was filled up but would also send them easy to understand work instructions on how to operate the machines. Their half mask visors even gave the user visual hints by highlighting certain parts of the machinery like the artillery gun they were operating.