How do I enter superscripts and subscripts?

Move the cursor to the formula where you need to enter superscripts and subscripts, click "Subscript and Superscript Template" , expand the template and select "Superscript" , "Subscript" or "Superscript and Subscript" .

Or use shortcut keys to enter: superscript (SHIFT+^) and subscript (SHIFT+_).