I'm straining my brain here, but IIRC, that 4 scenario event would be held 1/week at your local FLGS.
So my local shop, "Game Depot", had a Tuesday Nights at 5PM? thing, IIRC.
As for the sheets themselves.
Man, I don't recall if you got one when you walked in. If there was just 1 for the GM running the event. Or if there was a stack of them by the door that you could take 1 as you came/went to know when the next event was.
I think it might have been a combo of all 3.
One "Posted" by the door, 1 in the GMs hand, and 1 at each table w/ players, IDK.