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This page explains the process of logging in to chat on the live site and the differences of this process for anonymous and registered users.
When an anonymous user views a page that contains the Chat web part or the Chat login web part, she is presented with the following login box.
The text box provides an option to choose a nickname. It is automatically pre-filled with text defined in the Guest prefix settings key. If the user chooses not to change the predefined nickname, the system will append a number to the prefix and log the user in. Users cannot append any custom text to the guest prefix.
When a registered and logged-in CMS user accesses a page that contains the Chat web part or the Chat login web part, she is presented with the following box:
The login box allows the user to enter the chat with the nickname specified in their account properties. If the user hasn't specified a nickname, their full name is used. Note that the chat nickname can be changed after logging in using the Change nickname link.
The following are settings from the Community -> Chat category, which modify the behavior of the login box.