In PowerPoint, you can always select a text box and move it around by dragging it with your mouse, and then placing it in a new position. But this process is just visual and not accurate enough. Yes, there is a way to accurately position any text box just where you want it to be located if you use guides. Having said that, do not move your text boxes until they contain all the text content you need within them — or, you may find that your text boxes resize themselves when you add text to them!
Learn how to reposition text boxes accurately on a slide in PowerPoint 2011 for Mac.

