Hi @colourfulchris, it is possible to setup a scroll interaction, so that when the home section is not shown, the form is hidden, and when it is in view, the registration form shows.
I think though, you are trying to have the form appear only after reaching the bottom of the page, and to do that, you would need to have a link to click on to trigger the form so that it does not open until the user click a CTA button.
Would that work for you? If you use a CTA button, you could create one interaction for the form, and then have multiple CTA buttons on the page, linked to that interaction showing the form.
The kind of interaction needed would be a "click to show and hide" interaction, learn more about that here: https://interactions.webflow.com/click-to-show-content-video