Installation and integration questions

1) I have chat installed and tried to log in from another computer as a public user and nothing happens. Are those user/emails kept somewhere?

2) How can I have users log in to WordPress or use their WP log in from a previous posting. Specifically, how can I put in a log-in area on the page?

3) How can I harvest emails for use in our MailChimp? I saw you have another plug-in for that. Will you point me to it?

4) Once I have set up a chat in a page, how do I modify how it shows up? Is that global in the chat settings?

There will be more, I’m sure.