Working with styles in PowerPoint's electronic slide-show software allows users to get their "point" across. Although the software comes with a default hierarchy of headings -- starting with the large, bold one at the top of the slides -- the program provides an almost endless number of ways to change those styles. You can alter the style to something that reflects the PowerPoint subject matter, sticks to the official style guide or creates a desired effect.
Open PowerPoint. To change the headings style on an existing slide show, click the "File" menu, click "Open," click "Browse" and locate the presentation file. Double-click the file name to open it.
Click the "View" tab at the top of the workspace. Click the "Slide Master" button to open the collection of master slides.
Highlight one of the heading styles, such as the bullet header – the largest level text that reads "Click to edit Master text styles" to the right of the bullet.
Click the "Home" tab at the top of the workspace. Change the way the heading appears using the controls in the "Font" section of the ribbon, such as making the text blue, a larger size, a new font or centered on the slide.
Repeat the process to change other heading sizes on the master slide.
Click the "Slide Master" tab at the top of the work area. Click the red "X Close Master View" button to close the slide master and return to the actual presentation, with all of the changes to the header styles now showing.
Changing PowerPoint headings styles on the master slide changes all of the headings for that style on the slide deck and for slides added to the slide deck. To change just a single slide’s heading or to go slide by slide, click each individual slide and perform the change (skip opening the master slide).