HighLevel has several great articles on how to integrate with Zapier.
Here is how you can integrate HighLevel with zapier.
To integrate Zapier with StealthSeminar, follow this article
How to Get Started with StealthSeminar on Zapier
Or you can just go here, click on Connect StealthSeminar to 5000+ apps, and then in the next step (once you are logged in), add HighLevel as your integration
If you have any questions regarding the integration, reach support, we are more than happy to help you out.