Hi @Remmo! Are you talking about the image at the top, the form fields, or everything?
The top portion looks like a designed PNG mockup- not a template where you can drop in your pages to fit in each space.
As for the form fields, to add a dropdown, hit the + icon under the email field, then in "save as" select "tag" and dropdown should pop up automatically. Type in what you want the dropdown to say in the label field, then create tags for each dropdown option. Don't forget to make it required!