This panel creates the first administrator user for the instance. This user also has agent privileges, so the agent certificates and keys for the agent certificate are generated on the browser used to go through the configuration wizard. This administrator/agent user can use this agent certificate to access the agent interface for managing requests.
Pressing Next causes the browser to generate a key pair which consists of a public key and a private key. The public key is packaged in a certificate request that is submitted to the CA. If the requests are submitted to a Certificate System CA, the CA approves and signs the certificate request automatically, and the certificate is returned in the browser in the next panel.