Sub sub menus

Hi
I am using the Wiretap classic template to put up an artist portfolio site. I put all my images under a sub-menu of “Works”, which is working beautifully. I then put several different galleries under a single page titled “series.” None of the sub-sub menues are appearing, and the link to the parent page does not work either.
Any suggestions for a WP newby who is not very technically savvy?
Thanks so much!