Login to the appliance management portal browse to https://IP:5480 where IP is the IP or FQDN of the virtual appliance. Login with the root account.

Here we can configure settings specific to the virtual appliance, such as networking, SSH, syslog, etc.

To access the user interface browse to https://IP/psc where IP is the IP or FQDN of the virtual appliance. Login with the administrator@vsphere.local account created or defined in the installation wizard.

Here we can configure Platform Services Controller related settings, such as permissions, certificates, etc. To join the PSC to an Active Directory domain browse to Appliance Settings, and Manage. Under Active Directory click Join.

The Platform Services Controller has now been deployed and configured. Multiple PSC instances can be placed behind a load balancer to provide High Availability, as outlined in this KB.