I can help you with this.

First you need an event module, or Event Focus on your webpage. You can drag and drop the Event module onto your page from the Modules menu.

Once you've got the empty event module placed on your page, you want to click on it. You are cliking on the event on your web page - not in the sidebar menu, but on your actual page. This will open the edit options bar.

In the edit options bar, click the icon on the left, called “Choose Event”. Then pick your event from the drop-down menu.  This will add the event details onto your web page.

If you want to see how it’s done with pictures, check out the step-by-step user guide:

https://www.bookmark.com/help_center/article/how-to-add-an-event-registration-form.pdf