You can edit a PowerPoint template by adjusting its theme settings. Your options for editing templates look fairly similar whether you make them on the desktop or web ...

You can create your own PowerPoint templates, which you can then open later and use. To create a PowerPoint template, create a new presentation and edit it however you like, and then save it as a ...

PowerPoint 2013 saves your custom templates in a special folder in the user profile directory on your hard drive. When you start a new presentation, PowerPoint displays the templates in this folder ...