|Configuring People-Related Settings / Managing Access|
You can configure Jive to send out reminders for users who forget their user names. If a user forgets their user name, you can add an I forgot my user name prompt to the login screen. This prompt directs the user to a place where they can generate an automatic email to the address they used when they registered their account.
To allow users to request their user name, select Enabled - Users are allowed to request their user names be sent by email and click Save Settings.