First, log into Glass Register, and in the left side panel, click "Forms." Find your form in the list, and click the Edit icon to edit that form.
That will open the form's field definitions. Near the top right, go to your form's Settings tab, and copy the form’s Pop-up HTML code:
Once you have this copied, go to your website, find the page you want to place the pop-up embed on, and insert it into your webpage’s HTML (ideally just before the closing </body> tag).
Add a trigger element, such as a <button> or link (<a>) that will open the pop-up when clicked.
Add the "societ-container-modal-btn" id to the button or link you created in the step above. For example:
<button id="societ-container-modal-btn">Donate</button>