Just as an informative note, should you change the formatting on any parts of text where you applied a Character Style, you will see a (+) added to the name of the style when you click on that text.
If you want all of the parts of texts where you have applied the Character Style to change in one go, all you have to do is to double click on the Character Style you want to change and then change your options there.
These steps work with InDesign CS on both Windows and Macintosh. The palette and buttons may look slightly different in earlier versions but they work basically the same.
