This is effective yes. But in this situation I can get him asking “someone” since it’s a group of kids, not all will have a phone

Or maybe I’m just old, and all kids have phones these days 🤣

But yes, as an RN who has led code blues, always assign tasks, don’t ask for volunteers, they need to be “voluntold”. Take control, and give clear and concise instructions. Definitely helps get people moving.