From the New Camps & Events Dashboard
Select the Events Tab
Select the Event you wish to Clone from.
Click Manage then Duplicate.
You can then rename the Event to whatever you want to call it. eg you can Duplicate a Summer Camp and rename it to Halloween Camp.
Then Click Manage and Edit to update the Duplicated event with the details of your new event. You can add new date, time and other details which have changed.
Finally, click Manage and Resume to set the product live and for sale.