How do I make my screensaver the welcome screen or login screensaver?

1. When you get to Step 4 - Ready to Create check Create an installer for the Screensaver, to make a self-installing screensaver.
2. Click on the Options button to configure the installer.
3. Now select the checkbox Logon Screensaver.

This feature sets your screensaver to be the one that is shown before anyone has logged in to the computer.
This is while the login screen is shown when the computer has first started, or after the user has logged off.