Share your references with others by creating a Group. In Mendeley there are three types of Groups:
Private: With the free Mendeley account you can only have 1 private group, with up to 3 people in it. This allows you to create shared reading lists and share PDFs. It is worth noting though that any annotations made in a PDF cannot be viewed by the entire group in their libraries, only by the person who made the annotations.
Invite Only: This option allows you to share references with a group. The public can follow the group, but cannot join, edit, or add citations to it.
Open: With this option anyone in Mendeley can add to it, sharing references.
Create a Group
And select the Type of Group you want
Once you have added the group you can click on it to manage it, which includes adding members.
Create & Edit Your Profile
Networking through Mendeley
Through your Mendeley Web account, you have the ability to network with colleagues across different fields and create a professional online profile (loading your CV, interests, publications, and more). You can follow colleagues to see what they are working on or reading and can keep them up-to-date on your endeavors (an added benefit being that if you are tracking your work's impact, loading it into Mendeley means it will be traced through altmetrics).