Duplicating slides is a task that can be helpful, yet its value is not always understood. The first question asked is why would anyone want to duplicate slides? There are many reasons to do so. You may want to create another slide that is similar to what you already have. You may want to use the same slide twice. You may also need to create a slightly edited chart than what you already have on an existing slide. Duplicating and editing is easier than redoing it again.