ResolutionVirtuozzo Control Center and Power Panel screens are generated 'on the fly' from XML files using XSL transformations. XML files are located inside Service Container in /etc/vzcp/cc/ for Control Center and in /etc/vzcp/pp/ for Power Panel. There you can find and comment out annoying items using <!-- --> and restart vzcp service inside Service Container to apply changes:
# vzctl exec2 1 /etc/init.d/vzcp restart
Access permissions for different types of users are defined in /etc/vzcp/vzcpcon.conf inside Service container.