Admin settings
Useful for 'super admin' or more experienced users especially during site set up or a reorganising exercise.
Options available
Internal name
This can have a functional use so change with caution!
Prevent this page from being deleted
Does just as it says. Useful for preventing mishaps with site editors
Add page button behaviour
These settings are useful in ensuring that behaviour is consistent in site sections and can help limited the creation of pages in the wrong parts of the website.