You will most likely want to create projects rather than Unix groups. Unix groups are used to manage functions such as access and permissions to various aspects of a system (SSH, sudo, etc.). You can request a new project from the left hand menu at https://accounts.cels.anl.gov after you login.
The GCE projects directory is an NFS mount that users can access from any computer in the GCE environment.
- Existing projects can be found at /nfs/gce/projects/<project>
- Project directories permission The directory for your project is the one out of which you and your colleagues should collaborate, and any user who belongs to the Unix group associated with any given project will have read and write capabilities within that directory.
You can manage the projects you own from the left hand menu on https://accounts.cels.anl.gov under “Projects” then “Owned” in the tree. For each one you own, you’ll see the basics of the project, the current membership, and their role. You can add or remove new users there. If you’d like to designate a co-owner of the project, check their “Proxy” box.