Allowing users in my multi-site to integrate their own mailchimp

I am playing around with the Mailchimp plugin:

- I network activate it
- Put in my api key,
- Allow it to be on other sites in the multi-site network

However nowhere in a subsite admin page can I see where a user could put in their own apikey and create their own contact form to collect emails for their own mailing list.

I see the mail chimp functionality I desire for my clients with the "slide-in" plugin. However I would like to have the the ability for users to display their mail chimp form via shortcode, widget or possibly a function that would allow me to integrate the form in a template.

Are these things possible with the mailchimp plugin, or am I confused on its functionality in a multi-site environment.

Thanks!