You can create a copy of an experiment in the Experiment Browser or Experiment List. Select the experiment you want to duplicate and click on the Copy icon.
Change the experiment name and choose the study where you want to store the copied experiment. All experiment sections that contain data are copied by default, but you can also specify which sections should be included in the experiment copy. Click Copy to add the experiment copy to your lab notebook.
Note that you can easily identify the original experiment by linking it in the copied experiment.