qubeSERIES - Create an Apple account
This article explains how to create your own Apple Account (formerly AppleID) and where to find help in the official Apple support if you have any questions.
An Apple account (formerly Apple ID) is created by the end user. Support is available from Apple Support.
https://support.apple.com/apple-account
https://support.apple.com/en-us/108647?device-type=mac
You can use this Apple account to log in to all iPads included with a system.