Workshop

I have put my students into writing groups and have grouped them on Moodle as well.  My students have all submitted their essays to the workshop, and can see their groups papers.  Now, I want them to read over their group members essays correct on word- then resubmit.  I have clicked on the resubmit button on the workshop setup, but i do not know how to have them resubmit their changes to their group members papers.  Is this possible?  and how please