How to make individual pages

Hi! I am not exactly sure if calling these “individual pages” is the proper term or not, so please bare with me.
I am working on Bella Barre(very early stages). & I am wondering how I can creative individual pages. And what I mean by that is… if you visit Abby Bella Dance Studio and you click one one of the events on the bottom page, it leads you to a new page that does not appear on the nav bar. I work for this company and when i do make these pages, i go to add new and under the attributes -> parent there is a selection for “—” and I use that and it works beautifully! (The guy that worked on our site before I did, created that but he is not responding to my emails) So if anyone can help that would be so amazing! Thank you so much in advance! & i hope i explained it well enough!