Is there a way to clone existing events?

Yes - by clicking on the 'Clone This Event' option displayed at the top of the Event Dashboard for the event you wish to duplicate. Selecting this will create a carbon copy of the event you are currently in, which you can access by returning to the Event Index and selecting the event tile. The only difference between the two events will be the event's 'Slug' settings, which will be changed to ensure that both events do not share the same URL.

This feature allows Admin Users to quickly create a new event using the current event as a template. If you will be regularly creating new events with a similar configuration, this will save you the effort of having to manually configure a new event every time.