The article said it was Brown University’s corporate board gets to vote.
The tactic actually worked for all people involved so far. I don't know if a no vote will bring back protestors, that's a question that remains. But it was a peaceful solution that worked... for now. If/when they come back, you deal with that then.
Since we're doing a lot of guessing and speculating, I'd speculate that Columbia wishes they woulda done what Brown did.