What is Yoosung’s role in the RFA?

So I was replaying the game to get enough hourglasses to unlock Another story and Secret 01. But as I was playing, I started wondering what Yoosung’s role in the organization was. Like I know he’s a college student, but he goes on how V didn’t take over Rika’s role even though he didn’t either but then again that could be for personal reasons. Anyway, so we know that Jumin and Jaehee handle the financial side of things for the party, Zen does the image and fame part, Seven takes care of the messenger and all the other protective stuff. But what does Yoosung do?