If you mean how do you setup your VA to hook up with VA central, You need to go to root/core/app.config.php and copy the info
/* VACentral */
Config::Set('VACENTRAL_ENABLED', false);
Config::Set('VACENTRAL_DEBUG_MODE', false);
Config::Set('VACENTRAL_DEBUG_DETAIL', 0);
Config::Set('VACENTRAL_API_SERVER', 'http://api.phpvms.net');
Config::Set('VACENTRAL_API_KEY', '');
Then you go and paste the info into local.config.php
Set the enabled to true leave debug mode false
That should do it.