The easiest way to do this is by hovering your cursor over the 'Edit Page' button, then selecting 'Copy to a new draft'.
This will make copy of the page.
If you have made a copy of an event, don't forget to check that the category is still correct. If you have made a copy of a regular page, don't forget to check the 'parent' is correct. The 'parent' determines where in the website hierarchy the new page will belong.
Be aware that until you add all your new content and save the 'Preview' of your new page may show elements from the page that was cloned.