How to update multiple iPads to latest iOS using Apple Configurator 2.
Plug you iPad's into a sync centre
And open Apple Configurator 2
It will list all the iPads that it detects
If you look at the top right hand corner of each iPad you will see a red circle with a number in it
That indicates there is an update available for the iPad's
To update all the iPad's to iOS 9.02
Select them all by clicking on Command and selecting each one, or drag the cursor over them all to select them.
When they are selected, click on the update button in the top centre
Choose latest IOS
It will then download the update to the iPad's, unzip it and then finally install it
And that’s it you’re done.
All iPad's are updated to IOS 9.02