I think all you have to do is put in whatever name you want to use, and no password, ignore that for now.
As long as a name is not in already use, it seems to work.
There is a character limit - not sure how many are allowed - it will automatically shorten what you put it - I'll see if I can lengthen it a bit.
Examples:
(19:18:42) ChatBot: (Noemi_-_Ensena) logs out of the Chat.
(19:19:15) ChatBot: (NoemiEnsenada2) logs into the Chat.
The Password functionality is something we can use down the road if need be, like if trolls start showing up or similar.
New, Feb 28:
Chat Name Length can now be up to 30 Characters. :)