...
In the Install Option, the option to Install Velocity Web Service only enables the last option on this window to Create a Website bundle for a separate machine. This allows you to install the Web site on a different computer than your Velocity Server. Please take a look at VWSC Installation on Remote System for more details.
Enabling SSL communication for Velocity Web Service and Website provides a secure and safe way to log in.
The Authentication Mode can either be through Forms Authentication or Windows Authentication, as shown. The preferred authentication mode is stored in the configuration file to avoid overrides by the Velocity web client.
...