This is very interesting, but for a new meber of a Greek Organization, then it is Greek To them so to speak!
Each Organization has their own way of destignating Chapters which are all over North America. USA and Canada.
LXA for instance started with Alpha and went up the Greek Alphabet until it reached the single letters, then We started with Alpha- Alpha, Alpha-Beta, ETC.
Some Start with States, someone correct me if I am Wrong, but Say KS Starts with States. Alpha being the first in the state and next is State Beta. Next is State Gamma ETC.
While it is True, many do not use he Omega Designation, that usually means The Last Chapter When Someone Passes or Dies.
Ergo: Alpha Beginning, to, Omega The End.
Many others have their own Designations of what and how they deem their Chapters.
That is known to them as individual Organizations. Join, one, you may learn a lot!
Editing, for those that know anything about LXA History in the Old Days, Wow, strange but that was the old days of inseption!