After installing EndNote X7,

a new  EndNote X7 tab  will 

appear in  PowerPoint 2010

You can now add references from your EndNote libraries to your Powerpoint presentation.

• Have your EndNote library open
• Open your PowerPoint presentation and open the EndNote X7 tab
• Go to EndNote and select the required style
• Click on a textbox within a PowerPoint slide where you wish to add a citation
• You can create your own textbox and place it wherever you wish
   Select Select the required reference(s) in EndNote and click Insert Selected Citation(s) on the Powerpoint ribbon  in Powerpoint  to insert citation(s) on slides as required.

To add complete references to the last slide

•  Select the last slide in your presentation
•  Select the required reference(s) in EndNote and click Insert Selected Reference(s) on the Powerpoint ribbon