Howdy Werner,
Good question. You can not directly set your home page to be to be the events calendar in Options > Reading. However, there are two ways to make this happen. For one, you can setup your home page to display event data just as the events page does using template tags. You would have to dive into our documentation a bit get that setup: https://theeventscalendar.com/support/documentation/
If your server is running Apache like most servers, a much simpler method would be to redirect the home page to your events URL (which is usually http://yourdomain.com/events/). This can be done by modifying your .htaccess file, or finding a plugin to create the redirect for you. If you are unfamiliar with .htaccess it is probably best to get a plugin, as a misconfiguration to that file can result in your site going offline until it is properly configured.
Will one of those work for you?
– Brook