To use character extensions, either:
Turn on Auto character continueds by going to Document > Mores and Continueds, checking the Automatic Character Continueds box and clicking OK
- Type the open parenthesis (Shift+9) after the character name. You'll get a pop-up list of extensions;
- Choose the extension you want;
- Right-click (Windows) or hold the mouse button down (Mac) next to the character name. The Contextual menu will come up;
- Choose the extension.