Does Code Co-op support sub-projects?

Code Co-op doesn't support sub-projects yet (it's on out to-do list). Instead, create a parent directory which will contain a sub-directory for each of your desired "sub-projects". Set up a separate co-op project for each "sub-project" in its corresponing sub-directory. Note: Do not create a project with the parent directory as its root!

Ask new members to create a similar tree structure and join each of the projects separately, selecting the correct subdirectories as their roots.