Adding Pages to the Header

I’ve having problems with having my pages appear in the header. The only page that appears in the header is “Home”. I have written two additional pages that appear in my page management panel. The links for both pages work but they are not appearing in the header and I can’t find any options to have them appear there. I used to have my blog hosted at WordPress.com and these two pages were displayed at the top.

http://blog.miamicondoinvestments.com

Any help would be much appreciated.