Note that wolfman23601 called the pope the administrator here, and did not use the words "in charge". You can you read administrator and read "in charge", but the word administrator doesn't necessarily mean the all-encompassing "in charge boss" but can mean just a manager of the the day-to-day, to anything. Words can have different meanings -- English is not too precise...
“The ONE in charge of Christianity is Jesus — congratultions, you believe as we Catholics do. And we have Christ present in each mass in the Eucharist.”
Not exactly as you do. Christians knowledgeable in what the Bible says knows that “where two or more are gathered in my name (Jesus), there I am in the midst of them.” -Matthew 18:20
Christians don’t need to go to a Catholic Church and be at mass to experience Christ’s presence.