That's right. Anyone can get one started. When a group build is started, let me know and I'll get it added to the list of
Community Group Builds.
If there's something you are interested in building and no one else appears to be at the time, go ahead and build it and post your own thread describing your progress along with some pictures. If you have questions, someone else may be able to help out. Others might read about that particular model and may find themselves interested and end up working on the same one.