It is possible to do *some* Android OS Management, and this is contained within the Kiosk payload:
Note: Update policy when system updates become available (M+). When "Postpone indefinitely" gets checked, it will override the update policy and indefinitely postpone system updates on Android 9 and later devices. If unchecked, Android 9+ devices will follow the specified update policy.
However, I'm looking at the configuration of the device using OEMConfig. Again, not something SM supports right now, but this is something that we should look at. Reach out to your seller to discuss this, which they should be able to feed back to the product management team