I don't know what creating a group entails, either, but so far it looks like it creates a wall between you and other writers on the site. I had to subscribe before I could write this. Tread carefully lest you find there is something you cannot undo.
It looks like I won't see replies here unless I explicitly subscribe. If I'm wrong, good. If not, creating this group will help to Balkanize the community and make it harder for us to find both new works and new work on existing works.