Hi Samuel,
We have all our projects in common server and the development stations mounts the disk on the server with NFS. In this way all developers can attach all projects.
Different users also have to have write privileges on the files in the project. We set group pwrp and umask 0002 on all users. This will set group pwrp and write permissions for group on all files, and thus all developers are able edit the files.
One problem is that a volume can only be edited by one user at a time. If several users should work concurrently it's possible to divide the object tree in subvolumes.
/Claes