NFCS has just begun so go ahead and invite your friends or maybe even your friends list :)
This group is basically just a community, what you can do is go into the "Members" tab and add some people and ask them to play, or you can put up a discussion and ask people what ranks they are and add simular ranks.
Look into the discussions to see if there is already a post simular to this and go in the comments looking for the same ranks as yours and add them :)