You can choose from many VNC applications or Desktop clients such as the ones from RealVNC or Dell Wyse PocketCloud.
Only one VNC client session can be active at a time.
If a VNC session is active, you can only launch the Virtual Media not the Virtual Console.
If video encryption is disabled, the VNC client starts RFB handshake directly, and a SSL handshake is not required. During VNC client handshake (RFB or SSL), if another VNC session is active or if a Virtual Console session is open, the new VNC client session is rejected. After completion of the initial handshake, VNC server disables Virtual Console and allows only Virtual Media. After termination of the VNC session, VNC server restores the original state of Virtual Console (enabled or disabled).