1 - Login to your VZMC
2 - PErsonal Edition Manager -> Service VE Users
3 - You will be ask for user info / pass / description.
4 - You can add him to a group if you already have one created with the settings, if not you can go directly to the next point.
5 - In Ve access you should add the VE that he will have access and done.
To haces to the PowerPanel the Clients need to go to: http://servicevps:4643
In case you want to change this default port you can change in the the virtuozzo global configuration file in /etc/sysconfig/vz
have fun
carlos