I'm feeling a little dense because it seems everyone else has figured this out, but how do I add contacts to a Mailchimp campaign within vTiger?

I can easily add contacts to a regular vTiger campaign by using lists, but the option to add a list is not available in the MailChimp campaign within vTiger.

Hello dhudiburg,

the feature of loading a list is not yet available in the module. This is on the roadmap and as soon as we have some funding to support the development we will get this implemented.