How to control sleep settings for guided access?
I'm using my iPad mini 4 (iOS 10.3.1) in Guided Access mode, plugged in on a wall-mount. Currently the screen stays on indefinitely. I want the screen to turn off automatically after a couple minutes.
In the Apple support article about Guided Access (Use Guided Access with iPhone, iPad, and iPod touch - Apple Support) it says that on the Settings > General > Accessibility > Guided Access page, you can "Set whether the device can go to sleep during a session." I don't see this option on that screen on my iPad mini 4 (iOS 10.3.1). I only have the Guided Access toggle, Passcode Settings, Time Limits and the Accessibility Shortcut toggle on that page.
Did this page change recently, and is there somewhere else in the Settings I can control the sleep settings for Guided Access mode?
Note: if I enable the Sleep/Wake button in Guided Access mode, then the iPad will go to sleep if the Sleep/Wake button is pressed. But I want it to go to sleep automatically.
Thanks!
iPad Mini Wi-Fi, iOS 10.3.1, null