1) Click "Subscribers"
2) Click "Forms"
3) Click "Create Form"
4) Enter in a name for the form, a description, and select whether you would like double or single opt in when using this form.
Use the "Add Field" drop-down to select what demographic information
you'd like to collect. To make a field required check the "Required"
checkbox off to the right.
Use the "Add List" drop-down to select which of your lists you would
like the form to interact with. The membership drop-down to the right
of each list will allow you to set whether a list is selected or not on
the form, or if subscribers are just automatically added to a specific
7) Once you have made your selection press the create button at the bottom.