A student who needs help during a class can click the Assist Me icon on the right side of their CloudShare Viewer.  A bell indicator will then appear next to the student's name in the Students list:

You can click the  to turn off the request marker.

In addition, whenever a request is made, the Assist Me Requests icon at the top of the Instructor Console will turn blue. The number of open requests appears next to it. You can click the icon to see a dropdown list with the details of all help requests:

When a class has more than one Instructor, the dropdown list will show Assist Me Requests details for all Instructors, together with their handling status.

A student can also message an Instructor directly, by clicking the Instructor Chat icon on the right side of their CloudShare Viewer. A message indicator will then appear next to the student's name in the Students list:

To see the message and chat with the student, click the message icon next to that student's name. A dialog will appear for your chat:

To initiate or join a chat with the entire class, click the Class Chat tab:

The tab heading also indicates the number of unread messages currently in the chat.

To view a student's work closely, click  at the top right of the student's thumbnail and select Zoom In. This opens the VM which the student is currently working on in a separate browser tab. 

To actively assist a student in their environment, from the Zoom In menu of the student's thumbnail, select Take Over:

Select the specific VM that you wish to view and control and click Enable Input  to interact with the VM.