If you have more than one audience, click the Current audience drop-down and choose the one you want to work with.
Click the Manage Audience drop-down and choose Manage contacts.
Click Create Groups to expand group options.
Under How should we show group options on your signup form?, choose Don't show these groups on my signup form. This option defaults to checkboxes and can't be changed.
In the Group details section, type in a Group category and Group names.
Our system handles group fields differently from audience fields. For this reason, group fields appear at the bottom of your audience's signup form and can't be moved.
Group fields can't be set to "required" on general and embedded signup forms. Our pop-up signup form, and the Signup Form Content block on landing pages, treat groups differently, however, and will allow you to choose whether a group field should be required.
Change visibility of groups on your signup form
In these steps, you'll learn how to change the visibility of a group on your signup forms, from visible to hidden and vice versa. If you use the embed form option, make sure you copy the new the embed code to your website as well.