A customer asked if it’s possible to target all pages that have a parent page. And here is how it works:

1. Open up a Global Snippet or create a new one.
2. Scroll down to the “Position” metabox.
3. Select “Page Parent” on the first select box.
4. Select “is equal to” on the second.
5. Then start typing the name of the page or post you want to select.
6. That’s it!

Now your current snippet targets all pages that have the select page as a parent.