How can users start up their own vm's?

I have VM View setup with Zero clients using PCoIP.  Sometimes the users shutdown their vm by mistake.  The only way to boot it back up is to wait for me to do it through the the VSphere.  Are there any options where if the user connects to the view server using their zero client that their vm will automatically start up?  Anyone else run into this problem?

thanks.

VM View 5.1.2

VSphere 5.5

using Viewsonic SC-Z55 zero clients connecting to Win7 vm/