Hi, I am building a sequence of pages: Opt-in Page, Thank you Page, Download Page. I've already tried customizing a few templates but all of them have only two pages, Opt-in and Thank you. How do I add a third page to the sequence? I've tried creating a copy of the opt-in page and add a download button but then I can't get rid of the form I don't need on the third page. Does the paid plan has more templates? Thanks!