To add event, go to Front CMS > Event click on Add button present at top right corner in the event list page, then enter event Title, Venue, Event Start Date, Event End Date, Description, Add Media, SEO Details- Meta Title, Meta Keyword, Meta Description then select Sidebar Setting to show/ hide sidebar and select Featured Image (you can delete feature image click on Delete button) and then click on Save button.
Here you can view this added record in the Event List page.
To edit event click on Edit icon and to delete event click on Delete icon present in the event list.