I think he meant that they need to attend/host a CITO. the requirement is to:
8d. Explain what Cache In Trash Out (CITO) means, and describe how you have practiced CITO at public geocaches or at a CITO event. Then, either create CITO containers to leave at public caches, or host a CITO event for your unit or for the public.
In my opinion, the requirements for the merit badge are simply.. bad. But after talking to the folks that wrote the merit badge pamphlet, I understand it took years to get it approved and a lot of compromises were made.
Case in point,,, I think understanding how UTM works is a very useful skill (like understanding the metric system) but to require knowing how it works for the geocaching MB is simply trying to force an agenda. I ask you all of you geocachers, whom uses UTM by default when geocaching?? When was the last time you saw a metric speed limit sign in the US?