Видео с ютуба Rename The Masterslide In Keynote

How to change Background Foreground of PowerPoint presentation

Update all of your PowerPoint Slides at Once with Slide Master

Google Slides - How to change all of the fonts in a presentation

Editing the Master Slide in Keynote & PowerPoint

Apple's Keynote - 01 - Change Fonts on Master Slide

Keynote Master Slide Change