You have two options to choose from when using the Alignment Tool in PowerPoint: ‘Align Selected Objects’ and ‘Align to Slide’. Discover the difference here.
PowerPoint's Quick Access Toolbar is Your Best Friend. Use It.
How to Arrange and Align Objects in Google Slides
How To Align Objects on Multiple Slides in PowerPoint 2010
Top 3 Ways to Align Objects in PowerPoint [Full and Simple] - MiniTool Partition Wizard
Alignment in PowerPoint: Your Step-by-Step Guide to Perfection
How to Align Objects in a Microsoft PowerPoint Slideshow
5 Tips For Alignment in PowerPoint
PowerPoint 2013: Arranging Objects
Microsoft PowerPoint: Align - Select Technology
PowerPoint's Quick Access Toolbar is Your Best Friend. Use It.
Align or arrange objects - Microsoft Support
How to arrange and align objects in PowerPoint