i already asked the user who asked for this translation to clear it out but he didn't, it might not be right, the last statement could mean: offer in a closed envelop, or exhibition in a private manner! i honestly dont know how u can make an offer of something you haven't seen yet! I think he means the exhibition is not in the open, dont know, wont be part of this one... sorry!
Actually, this one's at least slightly logical "clear it out" includes the concept of "out", so if he cleared it out, it would mean he'd have to take it off the site.