You can create a configuration profile with a Restrictions payload to defer the availability of iOS, iPadOS, and tvOS updates up to 90 days from the date released by Apple. During the deferral, the new version of the operating system will not appear as available on user devices. After the set period, the new operating system version will become available, and users can update their operating system.
Note:
Updates installed via remote commands are not deferred by this restriction.
Requirements
Supervision is required.