You didn't show your page, so I can not see, but maybe you want to have several forms at single page. There is no way to place more than one payment forms on single page (except with "payment options" list). So I suggest you to create a "hidden" second page inside your page, which is possible with "iframe". This way only some portion of the page will be reloaded, from user's viewpoint. But that needs custom page and payment templates and some JS, which is more difficult to set that different payment pages, I think.