What I've seen: when it's cups in chain link it seems to be a team, when it's a sign like this it might be a team or it might be just one or two people. But like, it's really not hard or time consuming to zip tie some tarps onto a chain link fence. And if you get them in order beforehand, it should go damn smooth. Have someone down the road parked who can call you if you put up a letter out of order and you really should only need two people

It was like, 5pm or something idk I was tired from the beach when I drove by though. They were actively putting it up

Now that you've made me think through the logistics though, and I know where all the flucks are in town...