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Howdy. So, I bet you've seen this page before - https://developers.google.com/search/docs/data-types/events If you haven't, check it out. Another step - "register" with Google Search Console. And after you apply all the schema markup, test it with google structured tool. That and the GSC will tell you if something is wrong. Another important thing to consider - schema is only a suggestion to google. If you have all the data 100% right, it doesn't necessarily mean that the rich snippets will show up. All we can do is make sure it's right, submit to google and hope for the best