remote desktop to an active user session via vncserver

I am running tigervnc server on my rhel 7 server. I created an user and set the user to allow vnc. I then installed a tigervnc viewer on my windows 7 PC. when I remote into the rhel 7 server, I logged into a new session. What I want is to log into an active user session. can someone please tell me if this can be done?