I'm developing some plugin where I would like to enable custom pages. In my case some custom page would contain a form like contact form (not literally). When user will fill out this form and send it, there should be the next step which will require more information. Lets say that the first page with form would be located at www.domain.tld/custom-page/ and after successful form submission, the user should be redirected to www.domain.tld/custom-page/second. Template with HTML elements and PHP code should be also custom.
I think that a part of the problem is possible to achieve with custom URL rewrites, but the other parts are currently unknown to me. I really don't know where should I start looking and what's the correct naming for that problem. Any help would be really appreciated.
