Make sure that you have added the Surface Tag to your site before proceeding.

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Edit Head Tag

Add the following code snippet to your site’s head tag to enable the slideover form. 
<!-- Start Surface Form Embed -->
<script>
window.onload = function() {
    const surface_src = "<form url here>"
    const surface_embed_type = "slideover"
    const target_element_class = "surface-form-button"
    const c = new SurfaceEmbed(surface_src, surface_embed_type, target_element_class)
}
</script>
<!-- End of Surface Form Embed -->
Replace the <form url here> with the url to your surface form found by clicking the share button on the surface platform.

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Choose trigger buttons

The next step is to choose which buttons you’d like to trigger the form. This is done by simply adding the class name surface-form-button to the elements which should be able to make the form appear. 
<button class="... surface-form-button"> </button>