Type the number or word first
Select the text you want the suffix to apply to
Press and hold `Ctrl` (Windows) or `Cmd` (Mac) and press `=` to open the Superscript toggle
Type the suffix (e.g., `st`, `nd`, `rd`, `th`)
Release `Ctrl`/`Cmd` to return to normal text
If the suffix already exists, select it and use `Home` → `Font` group → `Superscript` (x²) to apply formatting