1. Open the Form Box.
2. Select Mailchimp as your autoresponder.
3. Type in your API. Should in case you don't know your API -- please click "Where do I get it" and follow the procedure.
4. Go first to the "On Success Tab". Choose your default success indicator. You can choose "Show thank you message" - then type in your message on the field below. You can also choose "Download something", "Show video on Pop up", "Re-direct to URL" -- just be sure to fill up the required information. Then click save.
5. Go back again to the Main tab. Below the API click "Get List" and supply the needed information. Then hit save.