First, click Signup Widgets in the left sidebar. Then, click the Create a signup widget button if you haven't made one before or + Create New Signup Widget in the Signup Widget sidebar.
Now you'll be able to enter details for your signup page. You can see a preview of what your page will look like for the user on the right side of the page.
Here you can choose an image, enter a title, description, button text, and more. Once you click Save you’ll see all the ways you can share your signup campaign.