Thank you for reaching out to us with your query.

The login form on the JoomShaper website is not a custom module; it is the core Joomla login module with a design override to match our specific requirements. If you would like to create a similar popup login form in Helix Ultimate, you can achieve this by overriding the login module and styling it according to your needs.

Please note that this implementation requires a good understanding of HTML, CSS, JavaScript, and Joomla module overrides. If you are not comfortable with coding, we recommend seeking assistance from an experienced developer to ensure a smooth and professional result.

Unfortunately, as this is a customization request, it falls outside the scope of our standard support policy. However, we encourage you to explore the documentation to implement this feature effectively. Also we have some template with kind of same popup design you can also check that Newedge, Newskit .

We hope this helps! Let us know if you have further questions.