Api Connection set up integration below is a single opt in.. To force the double opt in process please use the form integration below
Click on Authorize Button
Sign in with your Mailchimp logins to authorize the account and connect
Now you can select mailchimp and choose your list.. Please create your list in mailchimp first. If list is not found in EW please click the Reload List/Tags Button
The video below is if you choose to not use the api connection above and choose to use the custom code and create your own form code..
Once you watch the video please add the form code into easywebinar as seen here