I'm not 100% sure that I understand what you are asking.
We are already using a CTA button on the advertising we are doing -- "click here to learn more". When they click through they are being driven to the landing page, which in essence is a fancy way of doing a microsite. so, I don't want to have another button on th epage with click and then fill out the form - each sub section of the page has a form on it.
The workaround I have found so far is to (in the code) drop a <div> in each area where I want to form to sit, and use an iframe in the div with the form. However, the trouble I am running into is that even if the section is marked as editable in the template, it can't be edited.