Easiest way to change the font is to type, format and copy what you want for
auto-text in the header. Ex., Confidential Memo. Then, click insert, auto
text, "new" and paste what you formatted into blank. If it is exactly as it
is in the pre-set auto text entry, you will get a prompt to "redefine" the
entry. Click yes, and your formatting will be saved in the new entry.