Well, there are too many features available in Microsoft Power Point, but still if you want to add in supplemental programs for custom commanding & features, you can do it very easily by following the process.
Add a PowerPoint Add-in:
Download An Add-in
Save it in computer.
Add it to the available Add-ins list.
Click File > options
Click on PowerPoint Add-Ins in the Manage List.
Click on Go.
Click on Add New in the Add-Ins Dialog box.
Browse for the add-in, you want to add.
A Security Notice will be appeared.
Click on Enable Macros.
Checkout some unique uses of Microsoft PowerPoint
Load a PowerPoint Add-in
Click File > Options
In the Manage list, click PowerPoint Add-ins
In the Available Add-Ins list, select the check box next to the add-in that you want to add
for more details, visit : www.office.com/setup.