Install a PowerPoint plugin or an add-in Add-ins or plugins are supplemental programs that add commands or features to Microsoft PowerPoint 2013. You can obtain add-ins for PowerPoint from Office.com or third-party vendor websites, or you can write and edit your own custom add-in programs by using Visual Basic for Applications (VBA). You can install add-ins in PowerPoint using the Add-in Manager. There are a lot of add-ins or plugins available for the PowerPoint with different functions