You are able to clone/copy a list by following the steps below:
1. Ensure that the list you want to clone is selected from the drop-down menu.
2. Click on the Cogwheel icon and select Clone
3. Create a name for the cloned list. Note: by default, it will show as "Copy of <list name>".
4. Your list is now ready to be viewed and/or customized. You can select your new cloned list from the list drop-down menu.