You can customize and change fonts and character spacing in the Font dialog box.
PowerPoint for macOS has two options related to the horizontal spacing between individual letters and numbers:
Manual spacing that can be expanded or condensed The spacing that you prescribe applies equally to all characters in the selected text—for example, you could add ("expand") or remove ("condense") 0.5 points of space after every character.
Automatic kerning When certain pairs of characters are side by side, kerning pushes them closer together, for a subtly more appealing appearance. For example, if the capital letters A and V appear next to each other, kerning pushes them closer together, because there is room for the bottom of the A to slide closer and actually be under the top of the V. In contrast, if the capital letters A and M are side by side, kerning doesn't take effect because there's no extra room at the bottom of the M as there is at the bottom of the V.
Figure 1: Kerned characters (top) and un-kerned characters
Kerning is applied to text automatically, where appropriate, by PowerPoint as you type text.
The effect of kerning is most noticeable in larger font sizes. Therefore, PowerPoint lets you determine what size of text (in the "points and above" setting) it is applied to.
On the Font tab of the dialog box, you have several options to choose from including style, size, color, underlining, and effects such as strikethrough and all capital letters. Following are some of the other options:
Superscript Raises the selected text above the baseline and changes the selected text to a smaller font size, if a smaller size is available. If you want to raise the selected text without changing the font size, type a higher percentage in the Offset box.
Subscript Lowers the selected text below the baseline and changes the selected text to a smaller font size, if a smaller size is available. If you want to lower the selected text without changing the font size, type a lower percentage in the Offset box.
Equalize Character Height Reformats text effects as necessary to apply an even character height to the selected text:
Figure 2: Equalize character height
In the Text font list, the first two items are +Heading and +Body. These generic names represent the theme font for your presentation. The font of the theme that is selected for your current presentation is the font that is used when you select one of these options. (Click the Design tab to see thumbnail images of the available themes in the gallery. See Using themes in PowerPoint for Mac for more information.)