Select the slide master (the first one, which acts as the parent slide).Go to the View tab and, in the Master Views group, click Slide Master.Please note that if you make any adjustment on any slide, it will be overridden by any further modification made on the slide master.The changes will be applied to all the slides. Once you’re done, go to the Slide Master tab and click Close Master View.You can also move the text box around to change its position.Įditing the slide number on the slide master To modify anything related to the text box, go to the Shape Format tab. If you need to modify anything related to the typography, you’ll find the relevant options on the Home tab. Make any adjustments until you’re happy with the results.Then, click the slide number box, which is the one that contains the text “”. Go to the View tab and, in the Master Views group, click Slide Master. If you want to adjust these parameters for all the slides at once, you need to do so in the slide master.In fact, you can adjust the size, color, font, position, etc. If you want to edit the style of the text, you can do so in each individual slide.Run PowerPoint and open the presentation in which the slide numbers are enabled.