Configure optional user account fields
- In the Admin Console, go to Settings > Customization.
- On the General tab, scroll to the Optional User Account Fields section, and then click Edit.
- Set the Secondary Email option to Enabled.
Set the Security Image option to Enabled.
The browser must create a cookie before it can display a security image. Therefore, the image doesn't appear during a user's initial sign-in attempt, their first attempt after clearing cookies, or their first sign-in attempt from a new device or browser.