Fixed! Thanks so much.
Sorry, no this is not what I mean. I understand how page parents work. Please see the attached screenshots. On the “Students” page, you’ll see that the top item in the gray menu is the About Us page. But when I click down a level to “Student Chapters” the item at the top of the gray menu (not the parent item) changes to “Students”. So now Students shows up twice in the menu, and About Us disappears. (Also, I don’t believe I can control the left nav menu under WordPress menus? It seems to be automated?)
https://www.metalcreative.com/website/wp-content/uploads/students.png
https://www.metalcreative.com/website/wp-content/uploads/student-chapters.png