In the Security Assist wizard, there is an option to select to include "remember me" and "auto login"
If you have Security Assist 1.x, you will need to make sure to install cookies toolkit installed (included with Security Assist 1) for these options to function correctly.
The way "Remember Me" and "Auto Login" works is this:
When the Remember Me checkbox is clicked, the user name and password are stored in cookie variables. The user name and password text boxes are set to use those cookies as the initial value if they are set.
If the Auto Login Checkbox is also clicked, it triggers a Security Assist Authenticate User behavior that is configured to use the username and password cookies for login.