Groups are a simple way for you to collaborate with your colleagues and share a collection of documents. Any member of a group may upload documents to it. You can create a group by clicking on "Create Group" in the left hand pane. In general, you will want to create Private groups.
Once you have created your group, you can add members and documents to it.
The overview tab shows a summary of what has happened in your Group. You can see updates on who has joined, who said what, and which papers have been added by whom.
You can also post status updates by entering your update into the box at the top of the overview section.
Additionally, you can post comments and discuss your research. Just click on "comment" and start a discussion on any given topic.