How to apply a Blueprint to your iPads in Apple Configurator 2.
In Apple Configurator 2 select all the iPads you want to apply a Blueprint to
Then Click on the Blueprint icon
Choose the Blueprint you would like to apply to the iPads and Click on it
A dialogue box will appear click on Apply.
Then you will see a progress bar indicating how long it will take
It might take some time depending on how many apps you have added to the Blueprint.
And once it has finished your profile settings and apps have been applied to your iPads.