I am having a similar issue. I set the auto-lock time to 5 minutes in a configuration profile. The profile gets pushed to the iPad during the Supervise operation in Configurator. No matter what, the auto-lock time on the iPads is set to 2 minutes.

I have deleted the configuration profile and rebuilt it. Same result. 2 minutes.

Same issue here. I also need this to work without a passcode. If I do not enter a passcode, I can go in and change the time.

where and how should i set this ? Apple allow us to do that ?
i didn't get any tabs to set this in jamf too.

i would like to set this to all school ipad, kids love to set auto-lock to never and it drain battery for nothing.

It seems that the solution to this is explained in the comment here:
https://www.jamf.com/jamf-nation/discussions/20303/ipad-passcode-auto-lock-not-working#responseChild134503

is there anyway to bypass the passcode setup ? because i do not want to force setup passcode on some specific ipad.