Hi, I am new to this forum and I joined because I have a COB question.

My school is in the quarter system, and I believe the sorority I am mostly interested in might have their final COB event sometime in the upcoming week (or it may just be a normal event, i'm not quite sure).
I just want to know what exactly happens during a COB event? Do they offer you a bid at the end of the event? And since the girls they recruited already got initiated/participated in big/lil week, does that mean that I will have to wait until Winter quarter to be initiated? Will I be paired up with a big or will I have to wait? Or do I have to wait until spring quarter? What pledge class will I be with? (fall or winter)?
Thank you so much if you are able to answer my questions!