There are various add-ins available for PowerPoint. These are supplemental programs that add additional features to the application. Add-ins are available through Microsoft and various third-party vendors. If you find an add-in that you’d like to try, you can add it using the steps described below.

The following steps assume you have downloaded the add-in to your computer.

1. Click the Microsoft Office Button , click PowerPoint Options, and then click Add-Ins.
2. In the Manage list, select PowerPoint Add-ins, and then click Go.
3. In the Add New PowerPoint Add-In window, browse and select the add-in that you want to add.
4. Click OK.
5. From the security notices that appears, click Enable Macros and click Close.

[Photo above by Pete Reed / CC BY-ND 2.0]

[awsbullet:Evan Marc Katz]