Use the Server app to set up a group file sharing folder.
All members of the group have full access to the folder, and can upload, download, and delete files.
Shared folders are stored on the server in /Groups/groupname/ on the server.
Select Groups in the Server app sidebar.
Double-click a group.
To set up a file sharing folder for several groups, hold down the Command key while selecting groups, then click the Action pop-up menu , then choose Edit Group.
Select “Give this group a shared folder,” then click Done.
After the shared folder is created, click the arrow button next to the shared folder to view it contents.