As used in this chapter, "group" means the following:
(1) The membership of any of the following: (A) A trade association.(B) A professional association.(C) A labor union.(D) An employee association.(E) A club.(F) A league.(G) A fraternity.(H) A guild.(I) Another organization.(2) The employees of any of the following:(A) An employer.(B) Two (2) or more employers.