Hi,
again a message here to announce soon finishing of a grouped enhancements for all existing assignment types :
all types will be overloaded with a grouped type that uses real Moodle groups as scope for assignments.
This allows group based work, either inline, off line or uploading files.
Grades are set once, and distributed to the group's members. Feedback is given once for the group, who ever browses to the assignment view.
For uploads, a group will collectively share the submission temporary set, before submitting.
The patch of the assignment module is still on work for a couple of hours/days. Soon proposed for tests and evaluations.