Copying a view

1. Click on Setup > Application > Forms & Views available at the top menu
2. The list of all views is displayed. Click on Copy link corresponding to view that you want to copy
3. Enter the new view name
4. Click on the Copy button

Editing a view

1. Click on Setup > Application > Forms & Views available at the top menu
2. Search for the view that you wish to edit
3. Click on the edit icon to edit the view
4. Make the required changes
5. Click on Save 

Deleting a view

1. Edit the view (see Editing a view)
2. Click on the Delete button

You can also delete views from the list of views by selecting the views and clicking on the Delete button at the bottom of the list