You can copy a selected object or multiple objects to the Office Clipboard and then paste the objects in other parts of the presentation. The Office Clipboard allows you to copy multiple items of text or pictures from one or more presentations. When you copy multiple items, the Clipboard task pane appears and shows all of the items that you stored there. You can paste these items of information into PowerPoint, either individually or all at once.
Copy an Object
Copy and Move an Object in One Step
Copy Multiple Objects Using the Office Clipboard Task Pane