In MailChimp, besides the fields you can add to a mail list, MailChimp has Groups to let you assign a list member to one or more groups, so you can send messages to part of the list.
When configuring my Gravity Form, however, I haven't yet figured out if its possible to assign someone to one or more MailChimp Groups based on answers given in the Gravity Form.
Here's my scenario...
I have one list at Mail Chimp.
Everyone who completes the Gravity Form is assigned to the All Members group, but only those who say Yes to a Newsletter choice in Gravity Forms are also assigned to a Newsletter group.
Is there a way to populate the Group field in a MailChimp list?