Help needed–parent pages and dashboard

This is a basic question, but I’m new to website building. I downloaded the demo church version of enfold and have been building the site that way. For some reason, not all of the child pages on my dashboard are showing up on the site preview (I haven’t published it yet).

I also want to change the parent pages but can’t seem to get the change I make to update and take effect.

I also now have two parent pages called Events, when I only need one. One works and shows a static screen with text listing my events, and the other shows an error message and says the page either has been deleted or had a name change. I am not sure how to edit the Events so that they show up.