The Committee on Diabolism wants to be sure they can check everyone, or as close to everyone as possible. They should have enough magic between them to at least catch all the powerful Evil people, or at least that's Victòria's understanding, but they'll need to be a little careful if they want to be sure they've checked everyone.
The plan they've settled on is to station themselves near the entrances, where everyone will have to walk past them. They aren't confronting the Evildoers yet, that's for later, just making sure they identify as many of them as possible. They'll be meeting up before the rest of the committee meetings to compare notes.
Who here is visibly evil?