This is actually really easy. Start in the WordPress dashboard — you should be able to find a menu entry called Events and, if you click on it, you should see the Add New link.
Once you’ve found it, go ahead and click on it! This should bring you to the event editor. The event editor hopefully won’t contain too many surprises: it is intentionally almost identical — at least on first glance — to the regular page and post editor used by WordPress itself.
So, if you’re familiar with WordPress, you should feel right at home. Here is how to create an event in the classic editor:
9. Check an event category. Doing so makes it easier for site visitors to find the events they're looking for and significantly increases the visual appeal of the calendar.
Finally, hit Publish to save your new event. If you are editing an event you've already created, the button will say Update.